Dimensions for bucket seat bracket bolts.

[340Dust-her]

Are there any different dimension for buckets? I was looking into procar seats and they asked me to check if I have the right dimensions for the seat bracket bolts. According to them the dimension is:
13" 3/16 side to side
10" 5/16 front to back

my car is covered up in the garage and I plan on checking it out tomorrow(cold weather) the anticipation is killing me. Anyone know if they similar dimensions?

 

[Badart]

On my 73 dart abody buckets are 12 1/8" side to side 12 3/16" front to back. I measured the dimples in the floor pan and the bucket seats in my basement.