Metric springs

[Walt]

I am currrently running 11" springs on my metric car. At this time my frame is level front to back. In order to get the rear 1" higher as many say it should be, do I simply use 12" springs in the rear? This is a pure stock and we cannot run jacks. Also would a 250LR and a 225RR be a good start. I am using the following rates on the front 1100RF and 900LF what are your feelings on these rates?

[21 racer]

we run 1100 rf 1000 lf 11inch springs rears 14inch pigtail both ends looks like stock spring 225 lr 175 rr car has to much forward bite at times pushes outa turns