ok doin the 5.7 hemi swap in my cuda and hear ppl using all 3 of these transmissions, what issues did you guys have with doin the swap?, i talked to Bouchillon and they said to use the 545re cuz it would be cheaper to do. cuz it already plugs into the Ram harness.. or do i just do the 500/518 instead?, i can get all 3 of these transmissions very cheap, then rebuild.i know there is some fitment issues with the 518 and the 545re, but nothing major,, any help would be great so i can keep gathering everything i need