I have a kid who is trading me some ERS springs for the ones I got with my $39.00 ebay Coilover kit. The springs that came with the kit are 450 Front 350 Rear. The springs I am getting are 800/250/350 which I assume are 8 Inch by 2.5 Inch Springs with a 350 lb rate. The rears are 180.64.44 which is a metric measurement. I think it means 7 Inch long 2.5 inch wide and 246.125 lb or 250lb springs. Is this correct? I just want to make sure before I trade the kid. He wants my stiffer springs for his civic.