Autozone told me the fuel tank capacity was 22 gallons. I was told that the 89's were around 30 gallons. Also my bronco is a two wheel drive manual shift is that unusual? How hard is it to put in a transfer case? I think it has a front end thing ( like the rear end) that you hook your drive train too to hook a drive shaft into. is it expensive and hard to make it 4wd?