This CNC billet machined adapter plate will allow you to install a larger throttle valve on your single VVTi 1GR-FE 4.0L V6 engine.
It fits the 1GR-FE engines with the single VVTi (05+ Tacoma, 07-09 FJ, 03-09 4Runner) and allows you to move from the stock 65mm throttle and upgrade it to the 76mm throttle valve found on the later dual VVTi engines found in the 2005+ 2UZ-FE 4.7L V8 and 2007+ 3UR-FE 5.7L V8. Throttle valve from a 2006 Sequoia does not fit.
This adapter is used to install the much larger (76mm) throttle valve from the larger Toyota engines to your 4.0L V6.
It is a simple bolt on installation, but will take a little while for the stock ECU to learn to properly control the idle. This will be much easier to do on automatic transmission trucks than the manual transmission trucks.