Look to Aeroflow when you are wanting the old school retro look while having the latest up to date technology in your EFI powered ride. This drive by wire flange adapter allows you to bolt on a GM LS 102mm drive by wire throttle body to a 4150 flanged EFI intake manifold. Meaning you will never have to worry about stretching, adjusting, or breaking throttle cables again. This adapter plate is CNC machined from billet aluminium and hard anodised black. The O-Ring design provides an air tight seal between the adapter and throttle body. It features slotted bolt patterns which allows you to clock the throttle body in multiple directions. As well as 2 x 1/8 NPT and 1 x 3/8 NPT vacuum ports are included in the 1 high adapter.