I finally found a 3rd Rail PRR Q1. I think these were made in 2003. I bought this one from Royz trains this past York. He upgraded it with ERR, LED's, etc.
It was two chuff, triggered with magnets inside one of the drivers, but I prefer 4 chuff, so I decided to add two more magnets inside the driver. Based on my erroneous measurements of the magnet, Gunrunnerjohn was kind enought o send me some magnets. But I wasn't able to get a consistent chuff. So I bought some bigger magnets, 5mm X 3mm, and I got it to 4 chuff pretty well.
Here's a video of this beautiful locomotive: