Re: Big stuff 3 VS XFI
Mike a RPM has the big stuff 3 kits with the plug and play. Comes with everthing you need to just plug right in. The 4l80e harness is an option. It cost me about 2100 for everthing. Mike thew a tune in t that would get me up and running untill i can get to a dyno. This was easy to install.