No way, man. Go with the 3.73s. I had both 3.55s and then 3.73s in my 96 and the 3.73s were better. Whoever told you that the freeway driving is rough with the 3.73s is smokin' crack. There's nothing rough about it. Cruises like it's nothin'. I still got low 20s mpg with them. Puts it in it's power band where the engine needs to be. Plus you don't have to shift if you need to pass someone. But if you do it's alot more fun doing it.
I'm assuming your car is a 5-speed? If it's an auto go with 4.10s. Do not waste money on 3.55s.
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1994 Red SVT Lightning #2019 <FOR SALE>