Switch blade - You will want to use the crc top plate. I've been using three shocks for over a month now and am very happy with it. Tweeking the car is very easy and my bmi handles like a dream. I'm still underweight according to roar rules. The L4 weights a little more but I doubt the difference would be too much. Since you don't use tweek screws the T plate doesn't stress as much and they last ages. The pivot sockets take a little more abuse and wear but that's it. I've gotten my car to work great in high traction and low traction using 3 shocks.