OK, I would love to get MM Bilstein coilovers but dont have the $$$. I have some good struts/shocks and want to ditch the Sportlines. I was looking at the Granatelli kits. I do mainly spirited street driving and will do a little auto-x and open track. Is the 300 lb spring rate offered with the street kit the way to go? I read on MM websight sujesting 350 lb. I would think the road race 425 lb rate would be too stiff for normal street use.