The 468 is an aftermarket aluminum block motor. Totally unecessary and a big expense for a Gen III unless you're wanting to cut weight, factory blocks are more than adequate. Thiteks aren't cheap, but I'd venture to guess you could get the cfm needed from an Apache/Big Gas/HellCat head. The 468 I posted wasn't maxed out, it was still using a factory intake (ported) and 12:1, room for more compression and a better intake
Thiteks are not expensive for a brand new CNC ported cylinder head! Depending on how you get them, bare castings to fully assembled, they are around $2500-3500. I got mine for $2850...Ported Castings with Stainless Valves, ready to assemble. I had my own springs locks & retainers etc.
