Guys, I got to try out the new 4mm shock tower from Skyline Racing today and I'm very happy with it. Sturdy, mounts perfectly and the 2 optional holes help in tuning although I didn't use it today. It's similar to the Kyosho shock tower used at the IFMAR Worlds only 1.5mmm thicker in construction. This is one of the only few hop-ups neccessary for the car.