Are dart sports mostly gone

My 73 is in my Sig. It has Indy 230 cc cnc heads and intake on a 408 R3 block, Callies dragonslayer crank, scat H beams and a Solid roller. I just installed a TKX with a Ceramic Clutch. It has a Dana 3.73 with strange S Track diff and Cal Traks. Up front it has a Carl Gerst ( now QA-1) Tubular K Frame. A Mopar Resto Guru who has been in business for over 40 yrs did the paint and body work. It suprises me how many people are interested in it at local car cruises and shows.