Spring selection

[jas1159]

I am trying to select the correct springs for my kit car, it is a custom build and has the engine situated just in front of the rear axle.

The sprung corner weights are approximately;

Front
Left 110kg / 242lb
Right 110kg / 242lb

Rear
Left 165kg / 363lbs
Right 165kg / 363lbs

Can anybody help to push me in the right direction or make a sensible suggestion based on the above??

i have access to springs that are 125lbs/in to 500lbs/in and are between 11" and 7" high

Any help will be greatly appreciated