What's the main issue with Synergy?
Stay with the y-type. The t-type steering is a hack fix and has issues all the way around in most cases. Unless you are running a lift and constantly cycling the suspension on rough surfaces the y-type works fine.
The synergy parts are a better solution than OE but even they have issues crop up. Cross over steering is by far the best all-around solution, just a lot harder to build or install.
So who's "Y" type would you recommend? Can you still get it from Dodge? I only want to do this once. (Not trying to start a "What brand of oil" war)I would not do another t-type setup, ever. If I needed the efficacy and control it would be crossover steering. If it was mainly a road truck on basically stock suspension then I would stay with the y-type and use the newer specs. If you went away form stock spec son the y-type it was much a better feel.
While I agree that crossover steering is great, it is far from the "latest design". My 1982 CJ and 2003 WJ Jeeps both came from the factory with crossover steering. The T-style is much closer to emulating a crossover setup than a Y-style.
https://store.dodgeoffroad.com/Dodge-Off-Road-Crossover-Steering-Kit_p_106.html
Is this like what you are talking about?
So who's "Y" type would you recommend? Can you still get it from Dodge? I only want to do this once. (Not trying to start a "What brand of oil" war)