Glad you asked. I'm not coming down on the CP products at all they are proven, cost effective, and kick ass. I just like to put all the options on the table. Better cooling, Yes much simpler process to bore and hone over the plating, Interchageable intakes and exhaust flanges, Much larger transfer area than a supercub. Massive iron cylinders allow for long topend life before resleeving and a wide variety of displacments with out buying another topend to get more displacemnet (my 4mil is capable of 526cc at max bore) It definately is more of a proprietary item but I like it that way If I have aquestion or need advice 2seconds and i'm on the phone with louie the man who built it standing next to the cnc machine it came out of great customer support. On a personal opinion I love the way the topend looks its sick! in a world full of cubs, and cheetahs its nice to be differnt.
There are some nice differnces between the two prducts. Is it worth the cost? Idk thats for you to decide but there are definately other options besides the cast cylinders
design