Hi Gary: I'm just working on my plenum now and I can scan and email the written instructions from work tomorrow if you'd like. You'll have to PM me your email address.
Can't send the paper templates for the baffles as I have cut them apart.
The instructions are pretty minimal and the one dimension that I really needed was not there, which was the vertical height of the plenum above the engine. I called Sam this past Saturday to get it.
If you look at the valve covers on each cylinder, the top screw that holds the cover on. This screw goes into a boss on the top of the cylinder. The bottom surface (not the flange) of the plenum needs to be 1/2 to 3/4 of an inch above this point. I installed mine 3/4" above the boss and it worked out pretty well. The forward tubes lined up nicely with the round holes in the cowl.
Hope this helps, Terry.