[munch]

That may be something to consider.  My Coach has a tool tray under the rear seat and the seat back and bottom are not original, but padded and covered plywood.  The seat bottom needs to be raised as it sits too low.  Maybe room to create a compartment for a spare like that.  What are the dimensions including thickness if you don't mind??

[EDNY]

The tires is 21.5" tall,  laying down it's 5.75" high, FYI the backspace is 4.25"

[cocobolo]

Cocobolo,

Sounds like a plan, I'm still thinking about mine.  You know how the inside of a sedan looks.  Maybe create some space behind the rear seat back?

Absolutely, and I did think about that as well.  But something else I want to do is to make some sort of storage area between the front seats and where the back seats used to be.  So, if I had something in the way there, it would be real fun to access the spare.
 
I hope to use that area behind the seat for a custom fuel tank.

Incidentally, has anyone used or seen one of those folding four way wheel wrenches? They fold flat so you wouldn't use up a bigger area as in a regular 4 way.  Mind you, I suppose we all should have the same size wheel lugs anyway, so a long handled ratchet ought to do the job.

[munch]

cocobolo,

What do you think about these.

http://www.ebay.com/itm/Chevrolet-Chevy-Running-Board-Fender-Spare-Tire-Well-STEEL-29-30-31-32-/350910012464?pt=Vintage_Car_Truck_Parts_Accessories&hash=item51b3dddc30&vxp=mtr

[cocobolo]

You know Munch, I absolutely love those things.  The way I see it is they add a real touch of class to any car.  I mean, just look at at some of the old classics with the spares in the wheel wells, they look so good.  I just might have to give that idea some serious consideration, but at $125 a pop I'd be making them myself!  By the time that got sent up to Canada with shipping, exchange and taxes here, it would be in the $220 range...each!  Maybe OK if you are a working man, but us old age pensioners have to watch our pesos.
Another thing about those...I wonder just how wide a tire you could fit in there?  I suppose you could always widen your front fenders if you're a decent body man.
OK, I just went out and measured the width of the front fender...and you could put a REAL tire in there!  Those guys are wide!  However, the actual diameter of the tire would be limited.  You'd need to check on exactly what your tire size would be in order to make sure the wheel well wouldn't interfere with your front tires.  Too cold for me to waste much time in the garage now, but I think it's time to start looking seriously at wheel/tire combinations.
I also looked at the spare in my high priced Lumina, and it's about the same as the Camaro spare that EDNY posted.  So maybe GM used the same thing in many of their vehicles.  However, something tells me they wouldn't look that attractive in the front fenders!
Also checked the dimension across the front of the rear seat area, and it's only 44", so there definitely would not be room for a spare by the time a driveshaft tunnel was built...so that's out.  On to Plan B.

[jocko]

I used the original bracket with an adapter to 4 3/4 X 5.

[cocobolo]

Jocko...super nice car!  May I ask the sizes of your wheels and tires?  Thanks.

[munch]

Jocko,

Was the original the triangle with the bottom mount and rod on each side?  All three points mounted through the body panel into the frame.

Did you cut down the size of the triangle to fit inside the rim?

Looks good.

[munch]

Thanks for the assist cocobolo.

[jocko]

The tire size is P205 70R 15 mounted on a 15"x 6" rim. The original spare bracket mounts through the gas apron at 3 points on the frame. No modifying to the bracket just an adapter installed to the 3 original studs to mount the new bolt pattern studs to the new wheel. Remember original wheel was 6 lug and new wheel is 5 lug.

[cocobolo]

My tires are so different in size that its no consideration. I cant run different sizes on the rear because of the locker.I just have my AAA card and will call for a rollback if needed.

Two pizza spares???