Hello everyone. I have an 81 D50 that has the 2.0 in it with an auto tranny. I also got an 87 with the 2.6 and a standard tranny. I am wondering if I can take the 2.6 and put it in the 81 without too many modifications? Will the auto tranny from the 81 work with the 2.6....bolt up and such? I'd like to keep the auto tranny but can swap them over as well if needed. Any other modifications that need to be made other than a few wiring modifications that I can already see? Motor mounts and all that?
Please help as I'm new to these trucks and engines but am a very good mechanic and fabricator. Thanks in advance!!