Spring rate for rear coilovers

[Obiwan]

Hello guys,

I would like to install coilovers on the Front and the Rear of my SB. On the rear I've got 944 S2 aluminium trailling arms and want to remove the torsion bars to install uniball links. Knowing that the SB will be powered by a 2.4 T4 engine what will be the right spring rate for the rear coilovers ? (mainly street usage but want to go also on the track)

I'm interesed into Bilstein 944 escort cup rear coilover or the Koni cup ones

Thx,

Peter