[byron w]

Dragon462,
March makes a hi flow pulley for an FE in single or double groove.

1-groove is # 1552 , 6 inch water pump pulley
2-groove is # 1562 , 6 inch water pump pulley

Note, the crank pulleys are the same diameter for both. Single or double for the high flow and the performance use the same pulley respectively.

I hope this helps and good luck,
Byron