Have 73 Challenger bucket seat set. Installing in my 71 Demon split bench. Mounting holes on seat are 14-3/4" apart. Dimples on floorpan are 1 foot apart. From Bench seat outside holes to inner dimple is 14 3/4". So in theory all i need is a slider that is as high as the bench seat hump on the outside. The sliders that came with must have come from another car as they are 1/2" short front to back on the e body seat. Anyone make a simple slider solution for this?