[GT40FIED]

Ok...I looked a little closer at the Holley kit. I'd call them, but it looks like you'd be better off buying a "power pack" kit and buying the wiring harness and ECU seperately (it's all offered on Holley's site). The power pack kits will support a little over 1000hp if you use the 65lb/hr injectors. The Commander 950 MPI kit will only go up to 800hp...I like a little bit of a safety zone with my systems. I'd call Holley or email them and ask if the Commander 950 systems (not the power pack kits since the systems come with the ECU and harnesses) can support more power if larger injectors are used. If they both use the same ECU, I don't see why you wouldn't just be able to tweak the programming for bigger injectors. The problem with these types of setups are that they usually measure injector work in pulse widths or duty cycles...have fun with that. The overview of the ECU says it will work with low or high impedence injectors (only 4 low impedence injectors without an add-on part...low impedence is usually reserved for big injectors) and will support 1, 2, or 3 bar MAP sensors so my guess is that you could just buy the stuff seperately and substitute the parts you buy with the parts in the kit and then just sell the stuff that originally came with the kit. As the site says, you'll be limited to 14.7psi with the regular kit...meaning they use a 2 bar MAP. I'm assuming you'll be running either a P1SC or D series Procharger...either of which are capable of more than 14.7psi so I'd go with the 3 bar sensor. Keep in mind that the kits you see on the site are probably just a cookie-cutter kit...it can most likely be changed to suit your specific needs. I've also looked closer at the Edelbrock kit. The only one I see for SB Chevys (you're not running a big block, right?) only support 450hp. The kits look well thought out, but you wouldn't catch me dead with one. They don't look like they're too flexible. Another thing to remember is that you WILL have to fabricate the intake side piping of any blower you use to accomodate the throttle body. It won't be hard...but it'll take some doing.