@DOCBG, thank you for your tutorial on the free market and vintage vehicles. Be that as it may, I see this again and again in various marque forums. Lotus Elises, Honda S2Ks, and in others someone spends a bunch of money on various improvements/tuning/builds and then thinking they will get that money back dollar for dollar. The market has spoken for years on this issue. If you have a medium low miles 80 with 150k miles that is worth say $16k (give or take) and then you add $16,000 of aftermarket parts they end product is never worth $32k (all the money). I'm not sure what the rule of thumb is, but most people don't expect to get half the money back for the cost of the aftermarket parts.