motor mounts

Just a few days away from dropping my 416 in and again a problem,,i used a 69 340 block and my k frame is 73-76 small block, I wanted to use the motor mounts off the 360 I took out #3642811 / 810 and they don't match up to the 340/416,, can anybody give me the right motor mount #'s or better yet have a pair to sell,,thanks