Re: What would this be worth?
Probably a little on the high side, but not unreasonably so. See if the heads comes with rockers, and if so, what ratio (roller ?) - this could make them ok value if they have 1.7 rr's included.
If you are thinking about it, and have a definite budget, don't forget all the incidentals that will drive up your costs a lot.
e.g. Gaskets, Head Bolts, plugs, extractors (stockers won't work with gt-40p's). Just for gaskets, bolts and plugs your probably looking at an additional $400.....