My son purchased a 1979 RX-7 (GS or GSL) for $500. Now he wants to spend $5,000 refurbishing it. Is it worth it? What is the value of a premium 1979?

 

This is just my $0.02, but sometimes (probably most of the time), you don't look at the resale value when deciding what to do to your car. You just do it for the fun and satisfaction. I restored an MGB a couple of years ago...I put over $25k into the restore, but would be lucky to get $15k out of it. But I learned a lot, had a lot of fun, and it was very rewarding (especially when I won my class the first time I showed it!)

Anyway, that doesn't really answer your question, but it's something to think about.

Good luck!

Rich