likely you can keep the 4 groove crank pulley (looks unsightly tho) & how is the WP pulley looking as far as lining up with one of the crank grooves? (& using grooves that will line up with the alt & you can use either one of the alt grooves & the alt can be easily spaced forward or backward (to some extent). it might be awhile till I can get over to the shop & take a pic. a piece of tubing or a laser pointer works well for dead on pulley alignment for racing but for a low po app eyeballing is adequate.