what do you have for a spare tire?

What came stock in a 69 Dart? Have a spare but would like something that fits in spare well better (but couldnt put something like space saver on front due to header clearance concerns).
I cant stand the bulge in the middle of the trunk floor. Any ideas?
I was thinkin about building up a 2 1/2" platform/frame to surround it with foam rubber.