The thrill of the chase.Finding that rare NOS part new in a box is better than most things I can think of right now It also takes me back to a day when I wasn't old enough to enjoy them, but was growing up in that era when my brother and dad could.I always wish I was older and could have walked into a dealership back in 1969-70 and ordered a new muscle car.So for me also it's trying to go back in time and recreate a "new" as delivered car I guess.Heck,I even buy cool parts for cars I don't even own.I know when I finally finished my Cuda a few years ago,the "thrill of the chase" was gone and now I don't know what to do...well maybe I do.