Which one should I use?

[bigford]

you can save a few $$$ and use this
http://www.rcbrmin.com/114-rc-truck-...-l6-p-535.html

here it is in mine
https://youtu.be/CX2ByLH4eNQ

you need a y splitter for the throttle so the sound matches the movement of the truck

[Billy832]

Thanks! Probably going to go with this one....I can use my own speedo it looks like? Do I need mechanical trims? Or will digital trims work?

[RCP57]

I have the same unit in my Hayes and it works great. I bought the one without speakers because I had my own smaller ones. I have it hooked to a DX6i and it works just fine.

Reg