Haven't had Traxxas in a long time.
If RPM makes plastic ones, they'd be better than Traxxas OE.
But honestly, a steel CV kit would be best.
Amainhobbies.com usually carries a great selection for the rougher enthusiast as they cater more towards the competition side of things.
These should work I think. There are so many generations of rustler's over the years not sure which parts would exactly fit. But usually lots of stuff crosses over.
This is an optional MIP C-CVD Kit, and is intended for use with the Traxxas Rustler and Stampede (electric versions). MIP’s multiple World... MIP08123
www.amainhobbies.com
if you want OE Traxxas, these would work too. Boots will get torn up no matter what you do and you'll end up eventually running without them.
This is a pack of two Traxxas Heavy Duty Steel CV Rear Driveshafts. Traxxas Steel Constant Velocity Shafts deliver the ultimate in torque handling and... TRA1951R
www.amainhobbies.com