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