I have a '71 G10 that I got with some weird converted 5x7" lights. I have an OEM 7" headlight mounting kit with the bases and trim rings. It looks like there are two different mounting points on each side for the springs/screws. I'm trying to find out how the 7" headlights are supposed to be mounted and the bases oriented. That type of 7" headlight usually has three tabs on the back for orientation in the buckets, there are a ton of aftermarket H4 headlights, what have you guys used?