The alum center will work fine... if you want to pay
the price.... the plate for the diff from S&W is
95-019 for 19.95... it nice .. shows the axle C/L
as well as the pinion C/L with a slot cut in it for
a tape measure to hook in... I tried to get it on their
web site but it doesnt show it(their web site sorta
sucks) so you would need to call and get their catalog
610-498-7303..... or 800-523-3353.... they have a
bunch of brackets and tabs you might need also...
pretty decent on price also... I buy all my brackets
and stuff like that from them(cheaper than me making them)