I have a 89 f150 300 i6 4x4 with 3.55s. I switched from 3.08s to 3.55s. I wanted to say that the 3.08s were limited slip. My 3.55s are not. How much trouble would it be to make them limited slip?

 

While there are probably people here who can probably help you, this is a forum that's specific to the engine, not so much the body and drivetrain.

You may have better luck getting your answers by asking in the F-150 forum:

1987 - 1996 F150 & Larger F-Series Trucks - Ford Truck Enthusiasts Forums

 

Ok thank you.