Reply to "Valves"

I didn't check but if those Ferrea valves are titanium, you are looking for truble IMHO. Ti on the street is not a good idea- first, the stems need to be chrome-plated or they sieze in the guides, the tips need either lash-caps or stellite weld as pounding from the rockers causes flaking on bare Ti, and finally, in the exhausts, the seat areas spall at high temperaturers. Racers use them successfully by tearing the heads down every rasce or 500 miles, which ever comes first. The cheap Ti valves you see on E-bay & others are usually worn-out racengine take-offs. If the Ferreas are SS, no problem- they make good stuff if a bit pricey. I personally run Manley ss valves, the exhausts with cut-down stem dias in the port areas, for a little more exhaust flow.
Aussie 2V heads can run 4-V valves with a pocket-port job, done by someone who knows what they're doing with Ford engines.