Whose cutting 1.7x 60's on stock or 28 spline axles?

Dammit I meant to post this in tech

I am and Im just wondering if anyone else is doing it consistently. If I do upgrade axles, is it even worth the hassle of 31 spline, or can a nice set of 28s do the job just as well. Im going racing again next weekend and Im going to be trying to cut a 1.6x 60' to get into the 12s and I am becoming paranoid of snapping an axle. I launch the car around 5000rpm.

I posted this vid in another thread yesterday but for those who never saw this is how the car launches. This was a 13.25 run with a 1.75 60'. However, the car did a best of 13.16 at 103.5 yesterday
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I came into this thread thinking my 1.87 60 ft was cool, but I was proven wrong...................lol I was launching at 4000k with a nasty bog. What does everyone recommend me launching with my wrinkles, 5000k? I have a 3.35 (unfortuanately) 1st gear ratio with 3.73's.