Having a Pattern 12 and Pattern 13 you will definitely discover they were built for the average height and weight of the day. At 5'6" I drive my Pat 12 with the seat virtually all the way back against the back of the cab. I'd suggest you start taking yoga classes at 6'3" you'll need to be able to touch your knee to your chin to get in and out of a Pat 11 or 12. As to the weight that will depend on how it is distributed.
Some of the bigger guys in our MV club have trouble even getting in and out of the passengers seat.
But having said that once you figure out how to slide your self in they are an enjoyable truck to drive.
About the headlights if anybody is looking for the original bulb type headlight units they are available, both as regular blub and even halogen, I have them my trucks. So if anybody is looking I'll dig out the source.
If you want to do some more wondering around on the web to look at CMPs take a look at my website.
http://canadianmilitarypattern.com/
Being in Virginia may be you could take a run up to the MVMVC Weare Rally this summer July 25-27, 2012 it will be our 26th year. There will at least 3 CMPs there.
Cheers Phil
PS Bob is correct most of us use our real names, which encourages people to take the time to dig out information for fellow members of MLU.