What are these things? Why do you want them?

[SlowStang2]

I haven't heard of many people in person listing subframe connectors in person, but on here I hear it all the time. What do they do? I've seen people on here who said it was the best mod. I want to feel this way too and they dont cost much as I've seen in catalogs, but what else do they do?

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94' Stang GT Convertible Cobra upper&lower, Mac cold air w/K&N, BBK equal length shorties, BBK offroad H-pipe, American Thunder cat-back, BBK T/B 65mm, 24lb injectors, Pro-77mm MAM, pulleys, aluminum driveshaft, 3.55s 14.4@100. (Sad, i know. i have stock heads)