I put a set of the quanta belts on my old 1970 Challenger 340.
Drove it home maybe 35 miles and they were squealing bad.
I tightened them up and within maybe another 100 miles they were squealing again,
I pulled them off dropped them in the trash and bought a set of Mopar brand belts and never looked back.

I need to look at some belts here soon for my current car . Problem is all the current belts have this horrible waffled backside that looks like crap