For sale is a working IRS trans that I removed from my Thing 181. Trans works great, shifts great, no popping out of gear. I only removed it to install a stronger trans for a bigger motor. It does leak a little fluid from the front. Other than that, works great. I also have the original Thing engine for sale in another ad. Asking $499 OBO, cash, no trades. Located in NorCal in the Bay Area.