I have a 2008 Silverado 5.3, rear drum brakes, 17" wheels

Anyone know what the axle shaft length is? I see 3 options. also spline count? and a good place to order axle shafts?
I was thinking of going with Yukon gear shafts from eastcoastgearsupply

a few months ago I slammed a curb drifting my truck, I thought I only broke my wheel (it snapped the lip of the wheel off) I got a new wheel, and truck seems fine, drives fine, and I've done 115mph with no vibrations, but when riding behind me, that tire has a noticable wobble to it, thinking I must have bent an axle shaft???

Thanks for any info, or input?