Sportsman is the van style RV..right? If so ,pull the grill,core support, radiator,etc. Disconnect everything else, put a chain on your picker as short a possible and out the front it goes. R&R'd a TON of engines from van style RVs in the day...GM,Dodge,Ford...all out the front. Raise the front of the RV to keep the picker angle low...chain needs to be very short...off the carb base works or pull the intake and short chain across intake bolts. I always left the trans in the van to minimize issues.