Most have used gr2 struts and put koni inserts in them... But, the inserts for our cars are not made anymore.. Some say that the inserts for a mid to late 90s SHO are the right length.. As to the merit of that I am not sure..
Next, you will use the sleeve and spring kits from QA1. Just choose what spring rate you feel applicable and run it.
Hope this helps you in your build.