Here are my thoughts from seeing it.
--Smaller front head maybe split it to two heads.
--Mount the brain under the dash and have the reset switch, power switch etc for easier mounting. ( You said it goes on the dash but what about all the wires coming off of it?)
--Correct the jam time if it's off
--Fix the falsing with interference
That is all I can think of at the moment. I think are input will help. Maybe after all the input we can improve our GOL jammer that will be out.