Pro street stuff isn't a big draw any longer...restomod stuff with updated power trains and creature comforts has already taken over...
Yeah that's always the problem with customized stuff vs. restored stock cars.
Fads and trends change, and yesterday's cutting edge build is tomorrow's dated looking, undervalued money pit. Custom is great if you are going to keep it forever, but everyone's taste is different and if you want to sell it not all buyers will like your personal style...