OK, I have decided to get the Speed-o-motive 383 kit and add the ballance and the flexplate/spacer. Total is just at $950. This engine is a factory 88 TBI truck engine code "K". I will be re-using the intake, heads, and TBI as well as the factory computer programing. This has been pushed beyound the original planned $1300-$1400 max, but I think we will end up with a much better and reliable engine.
My cam choice is a SBC Crane Compucam/powermax 2030 with Harland Sharp S1002 roller rockers. I am buying the new springs from Crane to match the cam.

Will the factory TBI handle these changes witout noticing?
Will the factory "High Swirl" heads be able to breath well enough to feed this engine to the low max RPM of 4500?
I was told that these are a low flow, high velocity head.