your confusing what you need. as long as the supercharger kit matches the alignment of the front accessories, it could care less what you are using to control the engine. I am running a 2004 GTO supercharger on a 2000 camaro ls1 in my 67. (the gto and ls1 camaro use the same FEAD -front end acc drive) The only reason you would care about the ECM, would be a pre packaged ture, and you should forget the canned tune an get a real one. The only other concern, would be if the injectors included with the s/c kit used the same conector as your harness, if not, adapters are avilble or just get a set of plugs and cut solder them to your harness, no big deal.