Anyone have the spring rates for Eibach Pro Kit & Ford Racing Springs M-5300-K ? Ford factory spring rates are: Hardtop - 165lb front 142lb rear. Convertible - 144lb front, 122lb rear. Steeda Spring Rates: Steeda Sport Springs - Spring rate is 200lb front, 175lb rear. Steeda Ultralite Sport Springs - 195lb front, 175lb rear. Steeda Street/Comp Springs - 225lb front, 185lb rear.