Another Small Block Crank Damper question

I heard from several people that have used these with good fortune on 408's so I ended up with a PowerBond PB1004SS damper. It's a steel damper that is SFI approved and weighs about 7-1/2 #'s. It says it's made so the ring cannot come apart. Quite a bit lighter than the Trick Flow unit I sent back! Thx as always for shedding light on these - FABO is a great place!! PowerBond_PB1004SS_Damper.jpg