I think a lot of guys use the 88-98 chevy truck bench seats. they take the head rests off so it fits further back.some are 60/40 with the big part on the right, some are on the left. I have heard of some guys using dodge seats as well. intrepid I think. check bam's build post 2167. some guys also use astro van rear bench seats or yukon rear bench seats. not sure what they do for sliders but if youre building a truck the seat slider wouldbe the easy part. post up some pics of what you have to work with.
http://67-72chevytrucks.com/vboard/s...440079&page=87
or you could try this
http://67-72chevytrucks.com/vboard/s...age=2&t=436321