I believe trucks and for sure, Vans, have the oil sump reverse from the cars. You will need to change that along with the pick-ups tube and strainer. Years ago I installed a 69' 340 into a 72' Van and just changed over all the external items and it fit well. Note: had to fabricate the motor mounts(340 and 318 were different). The 340 never came stock in a Van. Also the truck and vans had a one qt. larger sump.