I started searching again this morning and it looks like I found my own answer by not concentrating on the Fitech part. This thread had most of my answers, thanks,
https://www.gmt400.com/threads/350-swap-questions.45963/
First post, been lurking and reading a while, I have searched and read all of the posts about this but they all seem to die with no real answers. I have a 78 Nova that I built a very nice 355 with Fitech for but then went LS swap. So now I have a 97 K1500 Silverado with a very tired Vortec. I...