[Howard Jones]

I am also going to mount mine horizontally and fitting up. This is mainly for packaging but also so as not to drain the oil back into the gearbox and overfill it.

Here's a picture of mine. It is made by Earls and the Earl guy said it was just about right. "These are VERY effective coolers and most people put coolers on their car that are too big" He also said that "airflow is the main consideration anyway, put it out in cool air and you will be fine"

I intend to duct air from under the car into the cooler so I am hoping all will be well.

I am fairly sure that oil temps will be fine for road use. It's track time that I'm concerned about. I think this would be true of any gearbox.

I want to be able to watch the oil warm up as I do the first few laps and then turn on the pump to keep it cool. So I really don't need any automatic switches.

I still need a answer whether or not the side fill hole would work for a temp sensor. I'm thinking there must be a lot of oil flying around in there and the hole is right at the top of the oil level. Should be enough oil contact with the sensor to get a good reading. Right?

The Earl guy said that these coolers are many times more effective than the tube type. He said that's why they cost more.