Here in CA and possibly in other states, Every F/M/J car is a 1976 and newer, requiring it to be smog tested with all original type engine and components.
Fortunately, not everywhere is CA and these cars are going up in popularity, and unfortunately, price, as other locales allowing mods mean these are more reasonably priced entry points into the mopar world. It used to be solid driver F body used to be available for $2-3k. They are now $6-10 depending on version and some Kit Cars and Super Coupes are over $15k.
I still haven't seen quantitative results on any of these kits that show the benefits. The benefits are always sold as "better", "chromoly", "coilovers"...yea yea.
Performance results? Kinematic improvement references [bump steer, camber curve, rollcenter migration, roll center changes, etc.]? How about manufacturing, what do the welding fixtures for these look like? How is the quality and accuracy checked before it is sent out?....Nada, they're sold on the premise that they are expensive and use coilovers so that must be better..
You forgot
new, which also means its better. A large percentage of buyers aren't going to ask for the data. They take it at face value as there are still a high percentage of people out there that don't question technical terminology.
