I have the RPM Street springs in my MS6 and they have been overall good with the stock shocks. But of course the roads aren't too bad here in CA and I was considering going a little bit lower on the H&Rs mainly for style.
But why the change up?
The RPM are straight rate and doesn't offer the softer initial progressive compression of the H&R.
Interested to buy 2003-2006 3.0 V6 Headers OBX, CPE or MSDS. Would prefer MSDS but will consider others. I am building custom turbo parts and need extras. I will also consider incomplete/broken sets.