I was recently having a conversation with a fellow Viper tuner. He claimed to have a conversation with one of the guys at Arrow, and was apparently told that the Arrow rockers work great on relatively stock engines, but if you plan on digging into the engine w/mods that the T&Ds are stronger and will hold up and perform better under 'abuse'. We are checking into this to see if it's true. If it is, we will continue to use, install, and sell the T&D rockers.
I'll keep everyone posted.