Not at that price. I'd offer ledzman, (eBay seller also) $980 or so. Be he'd take it, (think he's the cheapest for these heads). 79cc will get you a lot of compression, maybe others would chime in and say to get a stock set of heads properly ported.
Much better off getting your heads done for your build.
I was just considering the down time .if I have a set done then swap them out it will cut down the time involved .Also these have a bigger set of valves and compression could be adjusted with head gaskets .The big question is what's the difference in flow compared to stock ported heads and a set of S&S heads.