I have a '01 Wrangler with a 2.5 in it. I was wanting to swap it out and I am wondering which engine would be best and/or least expensive. Also, I know the transmission in there is a light duty one so I would need to get a new one as well, any ideas on that? What all needs to be done? What is a good site to get a conversion kit for the transmission to engine if they are not from the same vehicle?