I just bought a set from them, $525.00 a set and $25.00 per head shipping $575.00 total to my door. These are new castings with 1.94/1.54 valves and .600 lift springs but he will build them with what ever you need. He shipped UPS and they were in perfect shape upon delivery.
Sorry but I did not get any flow numbers with them. I didnt ask and I am not sure if they could furnish them. If I can find this info I will be sure to post it though.