I would not recommend "heavy duty" or performance struts/shocks on any car, unless you wanted super sports car handling. All of them are much too firm for everyday driving in my opinion. The previous owner of my 1990 Lexus LS400 (which is supposed to have a cloud soft ride) had installed KYB-GR2 (heavy duty) struts on the rear of my car just before I bought it. Granted, it had good handling, but the ride was very harsh. Needless to say, I had them replaced with OEM Toyota struts, now the ride is soft and cushy, but still well controlled and handling is still very acceptable.

I have heard too many bad stories about heavy duty shocks/struts of any brand, as far as ride quality is concerned. Even a Cadillac or Lincoln can have a harsh ride, given it has the wrong shock/strut installed on it.

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2004 Toyota Sequoia Limited 4wd
1991 Lincoln Town Car Executive
1991 Cadillac Sedan DeVille
1988 Mercedes 300SEL
1972 Chevrolet Caprice Kingswood Estate 9-passenger wagon
1973 Pontiac Grand Ville
(Prior MB's: 1974 240D, 1985 380SE, 1984 190D, 1993 400SEL)