PST or Bergman LCA bushings and pivots?

I recently rebuilt the front suspension on my Duster and one of the new rubber Moog LCA bushings is somewhat squished/distorted for some reason. I'm going to replace it and get some bigger torsion bars while I'm at it. I added late model disc brakes and a Hellwig sway bar, but that bushing seems to affect the suspension, especially when hitting a bump as it seems to "slide" so I want to clear it up. Right now I have 15" wheels and a 318, but when it comes to cars you never know what's in store... maybe a 360 Magnum and some 18" wheels. I think the pst torsion bars are priced right and they have a pretty deal on the lca stiffening kits that include the poly bushings and pivots. I have 6 decent piviots so technically I just need the bushings and am just wishy-washy about the poly versus delrin.

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Ok, that's the LOWER control arm pivot pin and bushing, not the "UCA" as you originally mentioned. I also cannot recommend Peter Bergman enough. I've spoken with him a couple of times regarding the pivot pins and his delrin bushings and that's the direction I'm going.