al jones

Tower hobbies has the six channel reciver for the futaba 2.4 fasst I know it's for planes but could I use it in my car it looks smaller in size.

rc-zombies

iTrader: (9)

you can probably can use it for cars...
if you're using the 3pk.. you won't be able to use all the channels..

Niklas Edlund

No. The only receivers right now that work for the 3PK/3VC/3PM/3GR 2.4 Ghz FASST radios is 3-channel R603FS & R603FF.

Read this FAQ:
http://2.4gigahertz.com/faq/fasst-faq.html