With my 81, I had a hell of a time too. It almost seems like the 81 turbo should just be taken off the list of ♥♥♥♥ you can put ms into.
I ended up taking off the crank pully, drilling three holes, epoxying magnets in them, then fabbing a bracket to hold a hall effect sensor. what a pain in the ass. then i ran a 4 pin hei, and all was fine. that's my suggestion. I beleive I am running taylors, btw