I had my truck in my Ford class as a demo of old style ignition. While we were running tests discovered they my alternator was supplying a whopping 50 amps. So I hit the local u pull it and found a beautiful 3g in a 95 t-bird. I had to pull the field wire from the factory harness and switch it with the one from the t bird. It's a direct swap into the weathertite connector. No cutting or cramping. I replaced the twin 10 gauge wires with a 4 gauge power wire and rewrapped the harness as factory. I'm looking for a mega fuse holder and a 150 amp fuse but Ill risk it for now. Alt tested good at 130 A on the bench. A little grinding on the factory mount and I had to drill out the lower bolt pivot. I replaced the upper bolt with a bolt and nut. All together about $50 and my lights are bright. Battery post read 14.75 v at idle with the factory t bird ( larger ) pulley. I'll get it into the shop next week ant get some readings from the VAT45.
I just looked up a new alternator for a '95 Thunderbird and Advance Auto is showing the same one to also fit a '95 Mustang GT. I double checked on rock-auto, and it's showing a 130amp available, so it looks like the last gen of 5.0 Mustangs are a source too.