, I thought GP3300 SP2 is an "excuse name" made by GP to legalize 3600.
Interestingly , IF I remember correctly, the later version could hit 450 sec + @ 30A ( compare to earlier version 420 sec. ).
On Road : Xray NT1 , RX8 , T4 || Mugen Seiki MRX4-R , MTX4 , MTX3 prospec || Tamiya M03 , M04 || Top Racing Sabre FD2
Off Road : Xray XT8 || Hobao Hyper 8
Radio : Futaba 3PKS || KO propo EX-10 eurus