WTB 3.75" to 4" Whipple pulley or both

Looking to see if anyone has one of these laying around for sale. If it has the slots like the old RR pulleys that's a bonus, no biggy tho I can have a machine shop do that.

Ttt

I have a RR Whipple pulley, in that size range. Let me get home and I'll get the exact size.

Ok awesome let me know. I just bought a 4" but would for interested in something a little smaller just in case.