He warned me during the original build about wear in the sealing ring area of the drum with the combination of street driving and 180 psi line pressure.
TCS has aluminum drums with a replaceable bronze "bushing" in the sealing ring area. I used one on my race car. But for a street car, I would just go with an all steel drum (for explosion safety).
If you run those sealing rings that grip the drum and wear the drum support ring grooves (on the back of the pump), wear is not a problem. But for very high pressure using teflon sealing rings, they wear the drum surface rather than the support ring grooves.
