Does anyone out there know how much different the rear susp. is on a GST and GSX.  What would it take to make the swap.

I know someone selling a complete conversion but they said it was for a spider. does this still fit on a non-spider GST

the spide and the reg. GS-T are the same chassis, the spider has a little more undercarriage strengthening due to it being a convertable, if it works on a spyder then it should wrk on a reg. GS-T no problem.