What size is the oil cooler and where is it located? The crappy twisty-pipe oil cooler fittied to military IIas ain't up to the job.

Many years ago I fitted a Fairey overdrive to my IIa LWB, its an easy job, you don't even have to drop the box. The result was more 'car-like' gear ratios with the overdrive in high ratio, quieter running and better MPG. Supposedly you need a special tool to get one of the nuts off/on of the...