Drive shaft bushings

[GVR-4579]

so i think my driveshaft bushings are starting to get out of hand, you know the big rubber doughnuts that align the pieces of the driveshafts, or maybe there arent any on a talon/laser, whatever, but they are there on my GVR-4 and are wearing out so i was wondering if you knew of anything thats better than the rubber thats there now. Maybe some poly bushings or something stiffer than stock?

Thanks Erik