edelbrock cylinder heads
I have had good luck with Eddy heads both OOTB and CNC...my daughter 's 71 Dart 360 used a set of the CNC head and has run a best of 11.05 in at MATS this year.
My 73 Duster had a set of OOTB eddy heads...and ran pretty dam good also...
But I would not have any problems trying a set of the RHS...and I plan on it for my 73 Duster as soon as I get it all smogged and tagged again...
One should keep an open mind......and maybe something will come along shortly that we will be saying those RHS heads are now last years technology....