OK, now let's be nice here! I appreciate all the information offered. It was all valid and well considered. My plan from the start was to run the 2.5 with 3.54 AMC 20 rear. (Have LOTS of experience with FSJ's for the truck/car gearing comparisions!) My main hope was for info concerning the ease/difficulty of mounting the 2.5 in my SPirit. I know that the 2.5 is based on the Six, so I wondered if it also has the holes that can be drilled and tapped (threaded) to use 258 mounts/plates to drop into the SPirit. I can figure something out for the trans. Thanks for your help and remember... be NICE in response to the responses of others! Have a great weekEND! Jesse Near Spfld, MO Lots of Eaglets Lots of FSJ's Couple of AMX's __________________________________ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com