ok to convert 10 x 1 3/4 drums to 11 x 2 1/2 on '72 dart?

Thanks for all the comments. I called Dr Diff and have new axles and rear drums on the way. Should go nicely with the new 3.55 gear and 2,800 stall. Next are new steals with dog dish caps. Just need to find a place that does custom steal wheels.