Quick Procharger Pulley question

Can anyone tell me the difference between the LS1 and the LT1 crank pulleys, for the D1 Prochargers? I want to order this kit https://www.rpmoutlet.com/fbodyaspcog.htm. They don’t make a kit for the LT1 cars and ASP wants $700 for a custom kit. I was hoping that I could machine/drill these for use on a LT1 crank. Any input would help

Thanks