New to the forum but i have been around cars all my life. I have a question about a diesel engine conversion. I have a 1998 Jeep wrangler 4x4. Ive heard of the 4bt swap, the om617, and the vw tdi 1.9 swap. but what other diesel engines could be swapped and could the 4x4 be retained? also the vw tdi swap, would it be able to keep 4x4 and just generally be a good swap?