I have an 86 Cherokee with a 2.8L Chevy engine and a New Process 228A transfer case. Unfortunately, the transfer case is bad and will need to be replaced (It's locked-up and the fluid is gray, with little bits of metal). Does anybody know if the New Process 229 transfer case is interchangeable with the 228 model? They look very similar, but I want to be sure before I look for a replacement. Thanks