i just bought an 89 f150 4x4 with a fresh 300 inline 6. the truck is a 5 speed and runs great. i have plans for 4 inch lift and 35s in the very near future, and plan on bein in the mud and creeks as much as possible come spring. my question is is the 300 adequate enuff to turn 35s in mud and get me thru fairly ruff areas of the the local creekin place near my home? its fresh with less than 1k miles. i dont wanna swap it unless i have too. most guys i know with similar trucks have 5 liters and 5.8 liters. i wanna be able to keep up with them in rough country lol