I have a '90 K5 that needs and engine. This will be my first rebuild so I'm trying to plan and learn at the same time. I am basically trying to copy an engine that looks like it would meet my needs and this is what I have found http://www.hotrod.com/techarticles/66278/index.html . My truck is a very nice truck that I use to travel in, and tow my 28ft. camper and boat with my family on board. I need something with lots of tq, but very reliable and street friendly. I would like to sort of copy this engine but with a 730 CFM TBI unit from Turbo City, OR a MPFI unit from Howell. Haven't decided yet. Price will be a factor. The cam is also something I'm not sure about, and I thought about using Dart Iron Eagle heads or the Dart Platinum series heads. I am open to any suggestions or input that any of you with experience in engine building can offer a rookie. Thanks for your help.