body drop advice PLEASE

[cb]

hey guys it seems that there is a lot of experienced people on this fourm. I am attempting to make my '82 short bed chevy lay body. I myself have never done this but i feel that i have done enough fabricating that I'm confident i can do it. I have an LS1 and 4L60E motor trans combo, want to run bumpers front and rear, want seats to sit at stock height, and hmm im trying to think of any other factors. oh probabily a 28 inch tall tire (diameter). can you guys give me a heads up on what ill run into. I have seen the idea in person that i am probabily going to do unless someone can talk me out of... cut the floor boards out only where the frame rails come through and relocate body mounts. so if i do go this route, what will i run into, nothing is too obvious as i have never gone this low before.

please help continuie my list any advice is appriciated

1. rad support drop
2.cross member drop or frame notch (what is better?)
3. cut away firewall possibly?
4. Floors and cab mounts
5. any other cross member need to be notched for tranny or drive shaft?
6. bed floor and bed mounts mounts
7. step notch
8. 3 or 4 link with bags(rear)
9. gas tank (what do i need to do) it has dual tanks...
10. spindle and bags (front)
11. steering column to power box linkage??

i cant think of too much more but any help of advice or ideas would be great thanks guys.