upgrading from 3.73 to 4.10 or 4.56

[Rallytruck69]

go crazy with 5.13s Im saving for a few sets myself.

 

[Kona]

Definitely thinking going the cheaper route and looking for an 8.8 that you guys were mentioning earlier--but how do I know what to look for? What vehicles would I check / how do I check what I currently have? I know that my Ranger is 99.9% factory original.

You may already have a 8.8
check the tech library