Originally it would've been on a 79-82 B310 Sunny SGX-E, however the guy I bought it off of in Australia back around 1998 or 99, I don't know what he had it on. So I've had it for 18 or 19 years now collecting dust and waiting. Glad I never sold it, but honestly the runners/ports are a little small for my built head, or a GX head, but I'm sure it'll work just fine. To get the most out of my setup, I'd be better off going with a GX or twin sidedraft manifold with an EFI conversion/DCOE or SU individual throttle bodies, but that's a lot more $ when I already have this ready to go.