I found this on facebook from Gary M Jr. Here is his upgrade and I wonder if it's worth the $40 in parts?

Protek 5x105mm titanium turnbuckles
Losi 5mm "moly" rod ends TLR344015
Losi 8.8mm ball ends LOSA6049

"The ball ends are 8+mm (3mm bigger over stock), and these rod ends are bigger than the Tekno 5mm rod ends (which are beefy) and of course the titanium turnbuckles are at least 1mm thicker and probably twice as strong (If not more) and 1mm longer than stock . For the guys worried about the weight, these are noticeably lighter than the stock ones.

I tinkered around with the 5mm Tekno rod ends and could not get them to work because of the length.(too long) This setup will give you exact measurements to the stock ones. And by the way it looks/feels much, much more durable. The measurements are exactly the same 72.60mm in between the rod ends."