Accessory drive with ChassisWorks subframe... what fits?

[AWDPete]

I need a drive for my '68 Camaro, using the Chassisworks subframe with power rack. I would prefer to use a GM drive and was looking at the C6 or CTS setup (with air) but think it may have clearance issues with the motor mounts. Either will work with my dry-sump setup however. Has anyone gone down this path already?

Prefer to stick with OEM mainly for cost reasons but I do like how they tuck the components down low and leave lots of room in front of the motor.

I understand the VA or Wegner setups will both work but for $$$$