A100 van seats? Size? Help

Can someone tell me the dimensions of an a100 van seat? Am working on a low buck scamp 340 project and would like to put small bukets in place of the bench. I have seen pics of the HEMI Dart with small a100 seats and it looks cool. I hate to ask this but has anyone looked at boat seats for such a converson? I have a line on some that look very much like the old A100 van seats, but I would like to keep the same dimensions. Thanks

How wide?