I am looking at doing a SAS in my 99 Tahoe becase lift kits are super expensive and id still have the 8.25 diff. I have push button 4wd, if I ditch the front diff for a dana 60 will i loose my ability to use the stock push button 4wd? If anyone has experience with this please chime in. Is the stock t'case strong enough to wheel 37s loaded down with weight?