I don't think the Con-fer style will fill the holes in the dash, but it is designed to clear the pocket door if it's positioned correctly. They do come up for sale periodically in the classified section or post a wanted ad. You may need to fab something up if your goal is to fill the...
Idk, about 81 BJ's but that handle may not be stk. The handle in your 2nd pic looks to be a con-fer style handle. Mines 7/8" od or similar to @Brew40 measurements.