Do yourself a favor and run the M155 pump, its what all of the later model sbc's and lt engines ran- same basic pump but with a 3/4" pickup. I'd also port the housing and the cap it mounts to.
Also, I recommend a HV pump and cant see any reason to not use one in a street application but I wouldn't use it in a high rpm race application (not sure what you're doing here).
As for the pump breakage I have heard they fixed that as well and the select pumps are running billet gears instead of PM ones. IF you have clean assembly and keep crud out of your engine PM gears should be just fine though.