1968 Barracuda Notch 340

Ok guys, weigh in. 11 x 2.5 brake shoes are in place ( dummied with wire) shoe ends are secure in cylinder piston slots. 11" drum ( I used 1970 Satellite for ordering) seems to fit fine, spins freely with 0 interference. Check out pics, does the drum/ backing plate interface look right to you?

Lug holes are larger than my 1/2" lugs. Did these B body drums come with differing lug diameters?

Cheers
Tim