Anyone know if the MRZ crank pulley from an LSJ fits on an L61? I really wanna convert to a full 6 rib belt setup cause of the supercharger, but need to know if the pulleys are interchangeable.

Also, would it be better to go with stock size, overdrive, or underdrive?

 

Ill guess and say that they are interchangeable, but some people are getting their keyways extended to fit the aftermarket pulleys so id research that.

one of the under or overdrives is good for sc i cant remember which tho