1973 340, want more power.

Correct me if I'm wrong but wouldn't a set of RPM heads after being gone through and assembled with good parts be like $2000?
You can spend that kind of money on RPM's if you like, but I'd buy them from Autozone on sale and save 20% or more so that puts you at around $1350 for pair loaded (+ your sales tax if Autozone has a store in your state), then $100 or so to check them out for any burs in guides, etc. I am not sure what you mean by 'assembled with good parts'.... this price is loaded & assembled with valves, springs, retainers & keepers.

The RPM's breathe over 400 HP easy right out of the box. And there is potential for more of course. Sure is easy HP.....