First setup, need advice on Aduino project.

Hi folks.

I recently purchased 4 Dayton transducers and a chindian 50w amp to setup with SimHub.  Firstly the 4 channel amp is really only 2 so that's a problem, and I've decided to go down the Arduino route instead as I can't get the feel I want from a straight amp setup.

I have a load of experience with the Arduinos so that doesn't bother me, but what transducer units should I look at?  What amplifiers have people used for this kind of thing?

I'm hoping to start with 4 channels, one for each wheel and tune it up from there.

Any advice would be very gratefully received.

Many thanks.
Tull.