Jim,
Didn't mean to talk you out of the idea, just letting you know what was involved. Personally, if I were switching the trigger I'd probably go with a 5018 Anschutz trigger. I just rebarrelled a 1907 Anschutz for a friend of mine and the 5018 trigger is a great one, kind of impressed me. You'd still have to mill a flat, drill and tap 2 holes to hold the trigger on. etc., and mill a small slot for the trigger sear to stick thru and contact the firing pin, and use a firing pin with a rear 90 degree sear contact. It'd be expensive, but should work great.
I really like the 52 C's and D's and the way the sear contact is about mid bolt. It's just an opinion but I think it helps to prevent binding on the locking lugs that are in the rear, and helps with vibration as well.
If you can get the original trigger to 2-3 ozs. it should be a very good one.