I'm 40 years old and plan on this being my last project the one that stays in my garage til i pass.
To me, this is key. If you were going to just play with it for a couple of years and then sell it, then modifying it probably won't help your resale value. If you are going to keep it for the next ~40 years, then it needs to make YOU happy, not me or anybody else.
I'm in the same situation - I've had my Z since 1980 and likely it will get passed on to my son. It is heavily modifyed and has no hope of ever being restored to stock (and I have no desire to do so). My car gets a LOT of positive attention when I'm out driving it around, and the number of times I've been told that it would have been better if I had just left my car alone is exactly zero.
Edited by TimZ, 5 days ago.