Hello everybody! I have a '79 RS that is mostly bone stock. From what I believe the rear end is original with a limited slip (I believe, I didn't look it up) 3.73. Now I'm looking to lower my rpms and gain highway speed drivability. I have an '83 K10 with a (again haven't looked at it but have spun and measured it) measured 2.71ish. The big question is will that gear pack fit in my '79 with minimal issues? I have the muncie 4 speed and 60 mph at the moment is about 3100 rpms. Any input is appreciated. Thank you!