quick belt question

[dredg9]

i am going to use this setup
2.76
4# lower
3.2 alt pulley
billetflow 4 piece idlers

im wanting to see what guys with this same setup are using for belt size. I have looked at cobrabobs list of sizes but im still not positive and want to here from some of you. Thanks

 

[95YellowGTBeast]

probly k080810 81in belt =)