I am almost done rebuilding a new engine for my truck. I think I am pretty close to the 400 hp range. I want a system that can handle it. It is a 5.7L engine. I know about upgrading the tbi system. I think I want to go with a efi system or old school carb. I just need to know what I need to do to get my current ecm to shift my 4l60e trans. I know of one. The tps sensor what else would I need to get it to work? I also would like for all my gauges to work in my dash. Custom chip? Thanks in advance for any advice!