I am currently doing a ground up on my 74 40. Nothing really special. I rebuilt both axled, 4speed trans and transfer. Motor I decided to leave alone since before I tore into it it did not smoke and ran really well. Undecided if I am going to keep the stock carb and distributer. Body was pretty rusted out. So I went with an aluminum tub. What a nice product. Anyway. I have seen and read some threads about the transfer case saver. Is this something I should invest in? What does it do exactly? Anyhelp or thought would be great. Thanks, Dan.