it will let you drop pulleys and add timing. its a win win to me. i just turned up my gen 5 n* back to 21 wot on a 3.0 pulley, no kr anywhere. i might see if it will take 23. why not right?

you might find that cheaper elsewhere, zzp had it for 425 iirc, i got mine off amazon for real cheap. they might have f ed up on the price lol 360 ish iirc