?? RHS or edelbrock heads for my 408 ??

I like the lower weight of the Edelbrocks. But like said above you can't beat the bang for the buck of the RHS heads.

Theoretically if your heads flow 275 cfm you can make 550. The Edelbrocks on my car are Stage 2 ported by Shady Dell and flow 280 cfm at 550 lift.