I notched my frame for the 5.3 truck style accessories. I used those pics posted in this post as a guide. Borrowed a plasma cutter, but it didn't do like I wanted so I ended up using a sawzall and hacked it out of there. It took me $15 in saw blades and $30 in flat steel and about 1 full day to get the frame the way I wanted it (including motor mounts) It was smooth sailing from there!! All in all not a bad deal and the final product is well worht the effort.