Narrowing a 68/newer 3/4 ton rear axle, anyone done it?

[buckroseau]

Just like the title says.

68 or newer 3/4 ton rear axle for a 2wd truck. From my understanding the 68 and new axle is 1.5" wider than the 60-66 rear axle. I've got a 62 C20 and I'm wondering if this is an option.

I know narrowing axle's isn't anything new. I'm just wondering if there are any surprises where the splines couldn't be milled on the shafts after they were cut 3/4 of an inch on each one?

I would keep my rear axle but it is a 4.57 ring and pinion, and from what I have found out, lower ring and pinions are just not available. A 68 or new axle would get me into 3.60 or 3.70 option area. And rear C20 axles are fairly cheap to pick up.

Thoughts?

Thanks, Matt