Mudsux, you should be fine as far as them being wired. However, we don't recommend using the wingnut terminals to power your winch. Our BlueTops (other than the 34M) are like the YellowTops in that they are dual purpose deep-cycling units.
I am not sure which BlueTop you have, but if they fit they are fine for the vehicle.
Guys, people mix and match batteries all the time, but as manufacturers, we recommend against it and don't warranty it.
I hope this helps,
eCare Manager, OPTIMA Batteries.