I have an 89 Chevy 2500 4wd pickup. It has a 241 transfer case I want to pull out and change over to a 208 I have. I am going to rebuild the 241 and install it my 87 blazer project. The 208 is already rebuilt and the truck is just for work. Will I have any issues with installing this or should it bolt right up. Are there any mods I should consider?