Excuse me if I'm wrong, but weren't reeds only for carb models?
I remember on my sled I have reeds, but my friend's SDi doesn't.
If I'm wrong and there are reeds for DI models, then I'd suggest reading up around DooTalk. Plenty of threads there about reeds. Mind you they are for sled motors, but the 787 is the same as the 800 put in sleds. Same performance gains would happen on your 951.