Ok so I have a 1988 BII 4x4 with a 2.9 and a 5 speed that is pushing 250,000 miles (Just wont die). And I also have a newly acquired 1984 Ranger 4x4, 2.8, 4 speed with a poorly maintained 105,000 miles on it. They are both absolutely gutless but, the hubby has always wanted to drop a 351w in his...