hey guys im new to forum and i am buying a 2003 chevrolet suburban 4x4 its got the 5.3 in it and i want to drop a duramax and allison transmission in it....i have read a bunch of info on this stuff but nothing that helps in does wires need to all be repined and traced or is it plug in and boom....motor mounts need to be changed or not.....and i know i need 3" body lift thats no problem....also what else would i need to change or get to make the vehicle reliable and run....all help will be appriciated......im new to diesel but have built many all motor and turboed cars so good with machanics