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Capt. Vic, I have not seen your E-mail yet, sent you a PM with my address. I can't get into my profile to check my address to makes sure it is correct.
My mistake on the T-37 !
Yes the seats are very similar, and also similar (as far as a model seat goes) to other versions too. If the MB site states they were fitted to the T-33, then it's very likely that some countries did retrofit them to their aircraft, as happened with the F-104. (RCAF/CAF CF-104's used the standard C-2 seat, but when these were sold-on to Denmark, they fitted the MB seat, same as Germany and Belgium, for example.).
Before you take my info as Gospel, just check on the RCAF/CAF CT-133 spec, in case they fitted the MB seats later. I don't think they did, and I wish I could find the magazine that has an article and colour profiles, including RCAF/CAF T-33s, as the info might be there, and I had intended doing a German or RCAF T-33 myself some time.
Meanwhile, here's a pic of an ex- Canadian CT-133 at Elvington, a gift from the CAF, next to the Canadian Forces Memorial, which as you'll see has the Lockheed seats installed.
It'll look great in that scheme, and yes, they're the Lockheed seats.
BTW, which kit are you using? Last one I did was the old Italeri I think, ex -Hawk or Testors, which wasn't bad, except for 'chunky' internal detail.