Pro Billet Dissy ?

hey guys, i'm using a pro billet dissy #8546 for the first time. engine is a 500 rb stroker, msd digital 6 box. running 93 pump, dynamic cr around 8.6, brodix heads. 1050 dominator, this is a street strip car. she idles around 900 ish warmed up.
anyways just wanting to know what a good starting point would be for selecting advance curve springs and advance stop bush. cheers