TwistedObsessionz: these Omni throttle bodies are designed to fit best on B-Series DOHC VTEC engines, but also fit many D, H, and F-Series engines. The good news about this is these will bolt onto the Blox or other aftermarket manifolds because those are most like the B-Series design.
Brutal883: these won't kit K engines. I know Skunk2 has a K-Series TB available, it's in 70mm and 74mm sizes at least, and the retail on them is $405 (70mm) and $420 (74mm). We can probably take $20-$25 off those as we don't deal directly with Skunk2 at this time. Want to, just don't have the volume needed yet to contract.