Car hit 90K, rear OEM shocks were found leaking, so I bought a pair of new Mazdaspeed shocks to replace them. Stock springs are still good but wondering if I should replace them altogether. Cant decide on which springs to get because I dont want to go to low.

A few questions.

1.) how much different will the car feel and drive with the new shocks?

2.) Who makes the MS shocks and MS springs?

3.) What would you recommend to do for springs if I'm looking to keep the same ride comfort?

Greatly appreciated. Thanks!