Need info on Ls1 engine swap into a 4x4

[Billy Bad A$$]

Hello, i know i dont post much of any here, but trust me i check in daily to read threads. Well my questions is, has anyone installed a Ls1, Ls6,Ls2,Ls7,Lt4.8,5.3,or a 6.0 Into a 4x4 pickup. And what problems did you run into. I know that on a convention small block that the motor sits back further on the 4x4 trucks than the 2x4 trucks frame and sits quite close to the firewall. And all that i have read on the site has to deal with 2wd trucks. Any help would be greatly appreciated