https://www.speedwaymotors.com/shop/...-1-12-313-5536.
Its a Speedway Single Plane inlet manifold as for 48 to 53 Flathead.
This manifold does not allow use of mech fuel pump, electric one required.
Presently have manifold set up on bench for fitting up of single wire genr and cooling fan as mounted below genr.
Cam well its for street use and yes more torque off stop and more low end power.
Phil NZ