Anyone who's done or is looking to do the 3G swap might benefit from this little trick. When I did my swap, I bought a 130amp alternator for a '94 Mustang GT. Other than the obvious differences in case size, the mounting hole on the top side of the alternator is not tapped like the original alternator. Most of the swap articles suggest using a 3/8" bolt to attach the alternator to the upper mount. Sure it fits, but the hole in the alternator bracket is large by huge compared to the bolt even though it's a perfect fit for the alternator. The head of the bolt doesn't cover the hole unless you center it directly in the hole. That's a pain in the tail. Yeah, you could throw a washer on the bolt to give it more surface area, but that doesn't do anything about the actual hole size. I found a solution that's cheap and works great and only takes a few minutes to do whether the bracket is on the car or off. I did mine while the bracket was on the car, but the pics were taken while doing a spare I had in the garage just to show how it was done.
Here's the bracket in question. It's the one bolted to the head and holds the upper mount for the alternator
Here's the bracket in question. It's the one bolted to the head and holds the upper mount for the alternator