cant seem to get the right belt. i have the stock diameter ati balancer. on a iron 6.0 block. Block has already been tapped im using the stock ls1 alt. bracket. was also thinking of maybe getting the bmr bracket. what do yall think? i know this has been posted before sorry for the repost i tryed to search but couldent find it.

 

I have the bmr bracket. Can't remember the length right now,
But I had no problem finding the right size belt.

 

With the bmr bracket, dayco part number 5060325 i believe and 5060317 wit underdrive ballancer.