I have found a 2003 6L from a 1500HD 4wd truck to replace a 4.3L in a 2000 2wd truck.

Just wondering if the frame and motor mounts would be compatable, I wouldn't think so considering it's 4wd.

Also would I have any problems mounting a T56 from a 99 Fbody to it? I have heard that there are problems with 99-2001(2) 6L's and t-56's not coming together properly.

Thanks for any input!