anyone use a comp roller cam and lifters in LA small block

Does anyone know if the Comp Cams Retro-fit Roller Lifters are lighter then the stock mopar roller lifters? Just wondering if an engine will rev cleanly to 6,000 rpms with those lifters.

Also, is a bronze distributor/oil pump gear needed with the Comp Roller cams?

Don't know about the RPM range but I do know that one of the members here works for a Mopar dealer (Mopar Super Center?) & they had the Comp Retro-fit roller lifters listed for almost $100 less than Summit. Also, I have a Comp roller cam. I called them & they told me that I didn't need a bronze gear with it. I'm still a little leery of that info & plan to double (maybe triple) check with them before I assemble my engine.