I just purchased an 89 ranger 2.9 regular cab. This is my second ranger. I also have a 92 4.0 extended cab with an automatic. The 89 has a bad motor and is missing the 5 speed transmission. I am considering putting a 3.8 engine and tranny from a wrecked 97 mustang in the 89 ranger. The mustang 3.8 swap would work for me because I have the complete mustang. My other option would be to take the 4.0 and automatic from my 92 ranger and scrap/part out the 92. But the 92 has 236000 miles on the engine and is burning about a quart of oil every 800 miles. Also, the 3.8 interests me because I have a 91 supercoupe engine that I can put in the truck at a later date if I can make the 3.8 work. Any input would be appreciated.