Accessory kit 19355805
 

I am building a LS3 for a 4th Gen Monte SS and i was looking at the accessory kit 19355805 or the Holley drive system 20-138. I jumped the gun and bought a GM 19180610 water pump. I see that I may have to mod the pump slightly to get it to work with Holley. As far as I can tell the 19355805 kit should use this pup without issue. Anyone use either of these kits and did you use this pump?