A: 700R4 was also used (and it's HIGHLY sought after by rod builders) I was checking out Advancedadapters website and several of their conversions for Ford Rangers are using 700R4 from 2.8L family. As for the other stuff, a 3.1 or 3.4L would require a balanced flexplate/flywheel. The 2.8L one is externally balanced till almost the end of the line. From: farna@xxxxxxx Subject: Re: AMC 2.5 only used in Jeeps, right? RIGHT...almost To: mail@xxxxxxxxxxxx Message-ID: <ADVANCES62idcDjoYAP000000eb@xxxxxxxxxxxxxxxxxxxxxxx> T-5s and 200R4 trannys were the most common, I don't know what else was used behind the 2.5/3.1/3.4. I think a four speed (likely T-4) was used as well, and maybe a three speed (200?) auto. Anything in a Camaro or S-10 2WD with one of those engines. The FWD and RWD engines use the same trans bolt pattern, but not all of the FWD engines have the correct engine mount bosses for a rear drive application. Service replacement 3.1L engines have bosses for both applications, not sure if a 2.8 or 3.4 were ever cast that way. That's only a problem if you plan on putting a 3.1 or 3.4 in place of a 2.5 or 2.8 in a Jeep though. Even then it wouldn't be to difficult to fabricate engine mounts of some sort, would just take some thinking and welding!