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Marauder big bore breech

Hey Everyone,
I was looking at the big bore breech for the marauder by baker airguns and I saw that It fit 1/2" barrels so I know it will fit the .25 barrel. I like the bolt probe on it, and I'd like to put it on my .25 marauder. Can I use the hill high flowing transfer port that I have on it now or should I use the original .25 transfer port? Any response is useful.
Thanks,
Matt