I have a 1970 240Z that I am just starting to strip to begin it's 2nd life, this time as a DE car. I checked the spare tire well and it is in excellent condition, as is the spare tire and rim, hold down bolt, and fiberboard tire cover.
I was going to cut out the spare tire well to free up some weight and make a fuel cell installation easier. PM me or email to Siberian@aol.com