So that's what this funny looking pulley is for... 
Still looking for twin pulley A/C crank pulley and right side (Manta/1900), aluminum A/C pump mount . . .BQS4 said:Dave;
It seems I have run into a batch of Mantas. I have one parked in the driveway right now (74 Rallye, rust bucket, being stripped for parts) and another waiting for me out in west GA this weeked (another 74 Rallye, again a rust bucket, but, has great parts) and another 75 Manta in east GA I intend looking at this weekend (again, another rust bucket waiting to be stripped)