Hi All, I have a question regarding the front seat belt mount. My car didnt come with the heavy channel between the frame rails for the mounting of seat belts. I got a pc of channel iron to make one but where to put it is the problem. I have seen them mounted in 2 different places, in front of the small angle iron between the frame on a flat quarter car and behind the small angle iron on a lipped quarter car. Did they change over the years? Thanks for your help. Jack in Mass.