Paso Robles, CA - Due to bigger tires and lower gearing, the AX5 becomes the weak link in most late model 4 cylinder Jeeps (YJs & TJs).  Advance Adapters is proud to introduce an adapter plate to mate the larger AX15 Jeep 6 cylinder version transmission to the stock 4 cylinder bellhousing.  This kit works for both internal and external hydraulic applications and upgrades both the NP231 & NP207 to a 23 spline input.  This kit also fits the Atlas transfer case.