I don't know...if you can get the Jeep for the cost of an old honda you have lying around, then go for it. This of course depends on what you think the Honda is worth. There are tons of people out there that are happy with their 4 bangers. I am not one of them, but there are others. As far as repairing the rear main seal, this depends on your abilities. If you do it yourself it really is not that expensive, it will just take some time. If you are having someone do it it will cost quite a bit more, remember those guys charge $50-60 or more per hour. You are going to have to pull the motor to replace the seal.