The motors mention are ideal for 1/10 models not 1/8
These are what need to using in 1/8 models alongside with a 150a esc http://www.ebay.co.uk/itm/Castle-creation-Mamba-monster-2200kvfor-Hpi-HB-E-revo-MBX7-etc-BNIB-Lowered-/111685585654?pt=LH_DefaultDomain_3&hash=item1a00facaf6 http://www.ebay.co.uk/itm/LEOPARD-RC-Model-4274-KV2000-Red-4-Poles-R-C-Inrunner-Brushless-Motor-IM150-/251784507905?pt=LH_DefaultDomain_3&hash=item3a9f86b201 http://www.ebay.co.uk/itm/LEOPARD-4082-2000KV-4-Poles-Ezrun-Sensorless-Brushless-Motor-for-RC-1-5-Car-Boat-/191575534928?pt=LH_DefaultDomain_3&hash=item2c9acaad50