Originally Posted by shift0246
i mean i am looking at both installs and the perrin loks like it is for the rear and the whiteline and kart boy are for the front it seems to me cause on the whiteline install guide it says nothing about the rear diff its all for the front
Got it now! Different product. The PSRS from PERRIN goes on the front. Click HERE
The subframe lock down shown in the DIY above.
Each product does a different thing. The PSRS is an anti-lift system for the front suspension under braking and hard acceleration. Plus with the additional caster angle it dramatically improves steering response. (Hence the name Positiver Steering Response System.)
The rear subframe lockdown system prevent axle trounce, driveline lash, improves throttle to drivetrain control etc.
Thank you for the follow-up question!