Forged crank pilot bushing hole.....

It could be but I wouldn't count on it. Most automatic cranks didn't get the final machining process for the bushing. If you have a new or used bushing, you can try it in the hole and see if it will start to go in with your fingers. Usually the unfinished hole will be rougher than the finished one. You can hone out the unfinished hole and cut down a stock bushing to fit, install a later magnum bearing assy in the outer converter hole, or have the crank drilled and finished to the proper diameter. I've done all three and find the easiest is to install the magnum bearing or an aftermarket bushing that fits into the same hole. If you have a '67 and earlier 273 or slant 6, the next easiest is the hone and bushing cut job.