I did exactly that on a Ford I was having troubles with the amplifier box, that big POS on the inner fender. I figured out a GM module could be wired to work. Went to a self serve wrecker and took one out. No more problem. Eventually I could not get it to start as the ring gear teeth were chewed in one area. Crankshaft had almost 1/8" end play and the bearings were copper all around. This was a California EEC 2 car in Canada with it turns out 300,000 miles. I think the crankshaft jumping around was confusing the crank position sensor and the module.
