Group / James. In the engine upgrades I have been watching and listening the discussions back and fourth and I recently started emailing/talking to a man in the U.K. where the emissions is less stringent. Where I live they don't check emissions. With a few modifications he told me about and done by professionals, headers, bored out injectors, re adjust the air flow mixture, no cat., no lambda/sensor, and free flowing exhaust they are getting out he said about 167 hp +/-. My question/statement is??? ( if ) the catalitc/emissions system can't be messed with in the U.S. then DMC Houston engine is wonderful at 200+/- HP. that's about $71.00 per hp. and the cost is nominal for the upgrade and I assume warranted engine. Adding another 30 H.P. costing $167.00 per hp. is even better but you are reaching deminishing return and still be street legal. My old days with the Cherry Bomb muffler's on vet's and headers are gone. U.K. also pointed out, that a blue printed engine, modified cam, unsupercharged engine in a replicated car was doing 260HP. street legal in the U.K. how would you like to drive that. Can the DMC Houston upgrade be put in my turbo De Lorean, which has already had the pistons modified and no telling what else. John Hervey www.specialTauto.com