On my auto truck, I have a s300 from
www.htturbo.com, known as their Sledpuller 66. With the Scheid injectors it spools instantly in the low 50's. Unfortunately it has a very small turbine wheel, so it's not gonna make a ton of HP with our lowly VE pumped 12 valves
. With a big turbine wheel, like the 71mm, along with the 66mm compressor wheel, maybe it would be a good HP charger. I've never dynoed this truck, but if it's still together after this weekend at the drag strip, I plan to dyno it at Scheid's event next month. I would like to join the elusive 400hp VE club with truck.
At one time I dynoed my 89 with this charger and Scheid injectors and put down 450hp. On my 89, I now have what's known as a Pro52, basically a hx50/55/h2e hybrid from what I've uncovered. It has a 71mm compressor wheel, and 68mm turbine wheel, 16cm housing. I plan to dyno it next weekend at IRP. Hopefully I can break 500hp single turbo only. Probly not gonna happen with a stock 12 valve head.
All that said, I think a good s300 of your choice, 66mm cold side, 71mm hot side, 14cm/.80ar housing, and a set of EDM's from Scheid or Buddha will at least get you started in the right direction. It's not gonna be cheap by any means. Then you'll want some extensive port and valve work to help it all flow;).