Number on part matces box part numberDid you match them to the old ones?
Are they the same?
The box might have the correct part number but the part may be the wrong one.
Right box wrong part......it happens
That pic is with no bolts onto the block and if I line up bottom for bolt I have a gap for bolts to block the angle is off on tha t cornerI had that issue when I tried to put later mounts in my 70S, about the same amount from lining up. Pre 73 BBO and SBO used different mounts, all 73 to 90 RWD mounts are the same BBO or SBO. Sometimes some shifting and pushing with a pry bar is necessary to line them up. Loosen slightly where they attach to the block, might allow the necessary movement.
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