Rousch heads are still on the engine, I can take some but about all you can see is the sides of them. 3/8 studs and guideplates. Double springs. I'd take $650 + shipping.
The P heads are still on an engine on a stand. I posted 2 pics of them. They were fully rebuilt 2500 miles ago, new stock sized valves, Trickflow springs. $350 + shipping.
I also have a set of SVO 1.6 roller rockers for the P heads. $145 if you buy the heads.
I could meet you somewhere to save on shipping costs. PM me your email and I'll send the pics of the Rousch heads.
I have a nicely ported set of '70 351W heads with 1.94 / 1.6 ss valves. Complete with double springs (for .600" lift), nearly new H.S. 1.6 roller-rockers, Comp guide-plates, moly retainers. Were on a flat-tappet equipped 7,000 rpm 355 in a 3,000# Mustang that went 11.9's Clean them up and bolt them on. These flow really well.