I am looking at a 90 f150 4x4 that needs a transmission. It has the overdrive trans in it right now and I know they can be pricey to change/rebuild. If I am able to pull it off I will be a broke bitch and was wondering if I could put a c-4 in its place? (could probably get one alot cheaper) How would it affect the transfer case/driveshaft?? I am not real familiar with 4x4's. Thanks for any help/advice.