The KIPA Dual 62/70mm RBC adaptor has a unique press fit 7.5mm ring that allows the use of either a stock 62.5mm throttle body or a larger aftermarket 70mm unit. If you decide to upgrade to a larger 70mm aftermarket throttlebody later on, simply press out the ring and install the adapter.
Designed with a removable 7.5mm ring so that you can upgrade to a 70mm throttle body at anytime, Adapts the RBC/RRC manifold flange to be used with K20A/A2/A3/Z1 throttle bodies.
Top Quality CNC machined Adapter kit made from sturdy 6061 billet aluminum tough prime materials that Vehicles enhanced durability and superior reliability, Replace for Lots of Performance throttle bodies.
This kit comes complete with hardware for both 62.5mm and 70mm throttle bodies, RBC/RRC gasket included to reduce heat transfer -Valex Racing exclusive. so again it will work if you decide to upgrade later on. The ring has a very snug fit and will not move or leak when installed.
The manual is not inlcuded, However, You may search some manual on tube. Easy to install, Your Powerful Vehicle deserve A Perfect adapter kit.