Twin Turbo 97 Chevy Silverado Build NEED ADVICE

[S130Z]

So my boss and I are planning on doing a twin turbo build for his heavy Chevy. We are looking to get around 500whp out of it to start with. Since this will be my first V8 build, I need some advice. Also, this will be a budget build with a limit of about $3K.

For the ECU we are going to use MegaSquirt as a full stand alone. We have found some turbo headers on eBay for a good deal and plan on using some cheap ebay GT35 turbos(please spare me on your opinions of ebay turbos, this aint my first roe day-o). The actaul turbo system I can take care of, but fueling on these engines is where my expertice is limited.

I'm not 100% sure on how to do the fuel system, such as what pump to use, what size injectors, and what type of FPR to go with. Any suggestions on this would be awesome.

As far as the engine goes, I have a friend who can help me out with a boost ready small block.