A bowtie 540 N/A is what replaced the blown 468...
I traded in my Bravo One while it was still in one piece, stepping up to an XR drive, 26°4-blade B-1 labbed, and IMCO steering, for the 24' Challenger.

540 dynoed @ 692hp and 650 torque...its coming out and going into the 24' Scorpion. The Challenger is getting a mild 454 and will be for sale soon.

I will send pictures and measurements of the pulley tonight. Brand new never been used.

From the pics you sent it looks to me that is a 16 rib pulley?
If so it wont work for me.