RIGHT ON SALVY THE 4SPD IS MUCH STRONGER THAN THE 5 SPD WITH IN REASON THE TRANS FER CASE IS PRETTY STOUGHT , MANY YEARS AGO ADVANCE ADAPTERS MADE A CONVERSION KIT TO PUT THAT TRANSFER CASE ON THE BACK OF A TURBO 350 FOR USE BEHIND THE V8 CHEVY, FOR USE IN THE LUV TRUCKS THE MID 70.S STYLE AND THEY NEVER SEEMED TO AHVE A PROBLEM WITH THEM JERRY