hello, i'm new to this forum and am in the starting stages of a 68 swb fleet build that is gonna get a 454/350 or 400 combo. i have a complete tbi setup from a 90 chevy van and a 454 throttle body from a 90 454SS. i know that i'll need a 454 chip and a higher flow fuel pump to make things happen. my questions are how much over stock can i get with a mild cam (what size, brand)?, if i go with a hi-perf chip (what brand)? got some shorty headers and an edelbrock tbi manifold. hoping to get 300 to 325 hp with these modifications. is this realistic? would love any help i can get. this is a planned 3 year project that my 13 year old son and i started about 4 months ago, and will be a ground up build. it's not my first build, but this will be my first tbi build, and i'm looking for a real streetable setup that "could" be driven if i choose. i did a search on tbi swapping and read all the posts i could find, and gained a wealth of info from them....thanks to the posters and your knowledge.