RX8 truggy and buggy setups

I am running a tekno neu 1512 2050kv motor on 2x 2s smc 9000mah packs in my tekno rc8 and get about 18 minutes before my first cutoff... I am the only electric at the track I think... If a decent driver was at the wheel, they would have taken the 20 minute final with ease, as there were no pit stops to be made hehehe

I would like to get the slipperential in the buggy and truggy too...