what spare tire well ?
you got about a dozen cars listed ;)
are you looking for dimensions of what people have used/are using or do you just need to know how deep the well is ?
I could run out and measure the well in my duster but you probably could do the same on your car
ive seen one or two cars where the owner actually cut a square out of the well and dropped the floor several inches so the bottom sits about where the stock tank would sit and the top is flush with the rest of the trunk
if you are willing to modify the car that's what I would most likely do, that way the trunk is still usefull