You want picture?! I got picture!!!
You want problem? I got problem! I can't post it on this message!!!
I sure can email it to you though! I can give you actual dimensions for it as well. The photo was taken by me standing on the cab roof of DRS 6-6-1500 SC/83 Magma Arizona Railway #10. As a member of the Arizona Railway Museum, where MARR #10 now resides, I am able to get you any pictures and measurements you require. And because I'm such a nice guy, I'll do it for free! (although someday I'd love to have a PERFECT model of #10 made in either O or HO.)
I want to add that there are 2 variations of dynamic brake "hatch" that I know of. The early one, applied to SP's DB equiped DRS units have short circular ducts extending upward from the hood. I've only seen this style on these particular units.
The second, and much more common varity is the basic flat top grill, which is how MARR #10 and every other DB unit that I've seen is equiped. This consists of a 3 part mesh grill extending over the 2 cooling fans that sit just below the top of the hood.
I'm not sure why the SP variation was made, but I believe it is because when they initially tried to add the fans to the short hood, they mounted the fan blades and ducts on the top of the hood, not the bottom like all later units. (including all of SP's AS-616's)
Please post your email address here or send it to me at [email protected]
so that I can mail you the photo. I got a bunch of other shots if you need more detail pictures! (including the top of the radiator and engine hatch, as well as MU connections.)