Here are 2 threads about the QSB 3.3 in a TJ. Not too much information, but maybe contacting AEV would help.
http://www.expeditionportal.com/forum/threads/78564-AEV-Diesel-Brute?highlight=cummins
http://www.expeditionportal.com/forum/threads/76356-New-Jeep-Brute
Here is a thread on a FJ60...