Karmasploit

Hey so I’ve spent decent bit of time researching and found a pulley for a m65 (m271 engine) supercharger I have a 2004 c230k (w203) and wondering is that prefacelift 72 mm pulley or facelift 62 mm only question is the pulley I found was 65mm but aluminum but also went on a c200k which I don’t think there’s a difference? Also with smaller diameter will I need a different size belt? And also any other performance tips I don’t want to make more than 275 crank if it can handle that much (I’m working on porting it as well)