Any brand better than the other.

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87 Z28 305 TPI, Auto, Gutted air boxes, K & N fillters, Dyno Max 3" cat back.

I got mine at Pep Boys. I can't recall if they were TRW or MOOG. I don't think the ones PSC sells with graphite impregnated dust covers are worth the extra money. If you want to invest the savings you get from chosing the TRW, get the Hotchkiss tie rod couplers. They are amazingly beefy! I lucked out and got mine on eBay for a 'lil cheaper, but they are definitely worth it. Good luck, Lon.