That was a neat swap the guy did putting in the 4.0 SOHC. Helluva lot of work, but when you get 200+ hp with out have to go to a 5.0 it might be worth it.
jims89broncoII: Your 89 is one of the easier swaps for a 4.0 OHV, most everything from a 91-95 X is plug and play. If you haven't already found this link, it is interesting and informative. Also pertains directly to your 89 B2:
http://www.broncoii-ranger.com/forum/viewtopic.php?p=9135#9135
If you haven't already done so, I suggest you find an X with a good engine and swap everything you can or want. I started with an 86 B2 and a 92 X with an automatic/154e that I didn't want. The B2 now has the 4.0, basically the dash, (I got a dash and all the interior from a 89 & 90 B2, put the X harness in the 90 dash.) yours won't need that, D35 front axle, soon the 8.8 rear and springs, a M5OD-R1/BW1354m and the 31's and rims from the X.
When I picked up the X, I was amazed at how much wasn't changed from my 86 B2 to the 92 X, and after seeing all the parts that I have used from the X, the $450 was well worth the cost. If I had bought them separate from a wrecking yard it would have been close to $1500.
Good luck with your project, it is time consuming, but nearly a direct bolt in
except for the rear end.
Ray
