Comp roller cam blanks are round lobe blanks so they can be ground with the proper port sequence. You have to use Falconer rockers, but they are included for that 6k number (oh, what a deal, huh?). They will sell you a head no problem. I have talked to them about it and was pretty seriously considering one, but real life intruded and I moved my kids here to WA instead. Altogether I have no regrets, man, that would have been a hairy 6 banger!
