I have resurrected my old MS Pro RX-7 FD3S, I dual celled it earlier today successfully (its mounted to the back of the car), put in a new wing, removed some of the old decals I had placed on it and my vinyl designs (they were getting kinda nasty) and added a wheelie bar, I also did a ZZ wheel mod. I'm still running the 3.4 but I'll be ordering a Perfection 4.2 King soon. This lil car has undergone so many changes throughout its life..from humble beginnings as a single speed MS, to its days of riding on a Shen Qi chassis, and now, its final incarnation as the hellfire breathing dual cell 2 speed chassis beast that it is today. Its probably not that big of a deal to you guys, but being that its probably the second true technical mod I've ever done, I'm quite proud of it..a Sunday afternoon well spent.