Norris cam's

I just picked up 2 Norris cams. One is marked Norris Mag 10, with .360" exhaust lift and .380" intake lift. The other is a Norris N750R with ..340, .370, .350, .400 lift from left to right. It has a narfed lobe and is in need of repair. My question is what exactly do I have here? And is anyone interested in purchasing the N750R.

I only know those are not the most aggressive of Norris cams. I think MegaCycle Cam bought Norris patterns and produces a couple of them, so a call might give more info.