Why is there no more performance oriented dealers? Ask GM, Ford and Chrysler!!!

Hot Rod, Popular Hot Rodding, Car Craft, and Musclecar Review all write about the great cars and the men who pioneered them at the dealer level.  Royal Pontiac was legendary for their supertuned street and race cars. Jim Wangers finally admitted what we all knew was true- Car & Driver's May 1964 GTO test car that ran a blistering 4.6 second 0-60 and 13.1 second 1/4 mile on bias-ply 7.75X14 Uniroyal Tiger Paws was a ringer. Royal Pontiac had pulled the 389 and replaced it with a blueprinted 421. No wonder production examples could only run mid-14s.  Don Yenko- a Pennsylvania Chevy Dealer was famous for swapping L72 and L88 427s into Camaros and Chevelles. He also introduced the "Yenko Deuce"- a Nova with a fire-breathing 370 hp LT-1 'Vette motor stuffed in it. Today a verifiable Yenko car is worth major bucks. Nickey Chevrolet in Chicago was doing the same thing-stuffing L88, LS6, and LS7 427 and 454 big-blocks into Camaros, Chevelles, and Novas. Hot Rod magazine road-tested an L88 Nova conversion in 1973. Joel Rosen partnered with Baldwin Chevrolet and built the legendary Motion Performance Mako Shark Corvettes and Rat-Motored Camaros, Chevelles, and a few Pontiac Firebirds. The legendary Phase III 454 package was guaranteed to run 10.60's in the 1 /4.  Mr Norm's Grand Spaulding Dodge supertuned Mopars much like Royal Pontiac did with Pontiacs, and even Built the Dart GSS-which was a 340 Dart with a Paxton supercharger on it. Bob Tasca of Tasca Ford was very successfull drag-racing a '68 390 Mustang that he swapped a 428 T-Bird / Police Interceptor engine into. So successfull that Ford listened and made the 428 an option on the new for 1969 Mach 1 Mustang.  Dennis and Kyle Mecham of Mecham Pontiac in Glendale Arizona created the "Macho T / A " in the late '70's. These cars were wildly popular with the buff magazines and have a "Cult" following to this day. However no one is doing it now. You'd think with all the great cars out there someone would. I mean take a new Mustang or Camaro and upgrade it with a cat-back exhaust, a K&N airbox, a computer chip or maybe a cam. Edelbrock and Magnussen offer emissions-legal bolt-on superchargers for Hemi Chargers and Challengers, and Camaros and Corvettes and Mustangs that increase hp by 175-250. I would think someone would step up and make big bucks doing it. But no one is. I asked several dealers why no one is doing this. I mean if you buy a Toyota Tacoma or Tundra and want to pay the price a Toyota dealer will put a TRD blower on it for you. But GM, Ford and Chrysler brass has told all their dealers that will NOT warranty any claim on a modified vehicle. In other words if your local dealer puts an Edelbrock Blower on your Mustang, and the power steering pump starts leaking 3,000 miles later, they won't warranty it. If a Dodge dealer puts a Flowmaster exhaust on your Charger, and the water pump lets go, your paying for it out of pocket. Doesn't matter if the failure is totally unrelated to the modification. That's why nobodys doing it. Its asinine, but the rule. Start writing letters to the big three and see if you can change their minds. If you've got the money to pay to do it, you should be allowed to. Nissan will put the "NISMO" package on a 370Z for you-suspension and brake upgrades, and intake and exhaust mods that bump hp from 332 to 350. The Anericans should follow suit, and we'd have legendary modern Yenko-style cars that will be future classics. Mastermind