Suburban 3rd seat

[TomW]

My primary tow vehicle, a 1984 C20 Suburban, came from the factory without the third seat. Thanks to Ebay, I now have a third seat, and expect the bed mounting plates (from a different person) to come in shortly. The problem is I don't know EXACTLY where, on the bed, to mount the four plates.

I understand that my body style was used from 1981 to 1989. Would someone with a Suburban made in that time frame mind measuring the distance between the street-side, forward plate & two other reference points (like the edge between the bed & middle seat and the wheel well)? Or send me a picture with a measuring tape stretched out for reference? If I can locate that one plate, the "new" seat can be used to locate the others.

Also, if anyone has the two seat belt pieces attached to the wheel wells for sale, please PM me.

Thanks for any help,
Tom