96 chevy 1500 single cab long bed 350EFI.

my buddy is trying to get me to pull my motor and swap it for a 6.0L
pros and cons of makeing the swap?
do i have to cut my frame to put a short bed on my truck and if so how much?

im going to put different gears in my truck. 3:55s or 4:11s? whats the difference?
leme now what you guys think

"new jack"