the strut (KYB) and spring (Intrax) combination you have wont have any negative effects on a daily driver. but for rough pavement, aggressive turns, even more aggressive speeds, youll notice ill handling charachteristics. the Intrax are linear rate spring (read - stiff) and the KYBs are "meant" to be factory replacements. but the KYBs fail utterly on the SHO, IMHO. the springs will wear out the strut very quickly. the only struts id recommend with Intrax springs are Tokico or Koni. other members here will differ in opinion.
before i moved to South Texas, i put new struts on my friends Blue92. he had KYBs with Eibachs for less than a year, less than 10K miles. when i removed the KYBs and placed them upside down (strut rod on concrete), i could place one finger on the bottom of the strut and barely push on it before it would start collapsing. there was no life left in the KYBs, except to be used for maybe the Koni inserts, if they could be used.
the strut/spring combination i am running, (and the first to try and succeed) is the Tokico with modified Moog Cargo (control) Coil springs. i drive aggressively and love the twisties. with my setup, i have little body roll. if i were to install subframe connectors, i would have zero body roll, just like SHOMurphs SR-69. NotSoSlowSHO (Kenny) is running modified Moogs on Monroe struts and he loves the ride. i consider Kenny and i to be pioneers in the Moog spring territory for the SHOs. we both did a lot of research and took a risk, and we both came out very pleased.