Very few cars I've ever worked on had a problem with air getting stuck in the system. I've also worked with water cooling systems for computers in the past which have VERY similar components and function.

Usually if there is air in the system, it's because there was a high point in the system (above the fill level). That being said, these are close systems which should force the air to move along the path with the volume and pressure we will be running in the SRT6. I suspect there won't be much chance of air getting caught in the system. If everything is lower than the Intercooler itself, it should be fine as that is the 'high point' but is just off the pump.

The Johnson pump is more than adequate for the job. I have changed mine even though the factory pump seemed fine

As to the battery with reservior, there was someone on the forum that pointed to a reservior that was just that a battery replacement with room for dry cell battery similar to the Optima or Odyssey.

I will be putting mine in the cargo area for two reasons.

1. Weight distribution. The reservior in the back will further balance the car as it still has a bit more weight in the front.

2. The long lines from the front to rear will give even more capacity. The lines + the reservior will give you a greater capacity. This should result in the coolant being even cooler by the time it hits the intercooler.

Another option to the heavy duty rubber lines would be partial aluminum finned lines in along the underside of the chassis. This would act as an additional cooler along with the one in the front. I think HDDP is using these in his set up.

Make sense?