I went with the 1100 Elites over the Rally 1000's {Rally's look more period correct} because the Elites were a little shorter at the base, wider seat & taller backs, better fit for me... Unfortunately, I don't have a camera any more that is compatible with my new computer {my old camera won't download, it's for an earlier outdated 2000 software} to take photos of the mounts/brackets/sliders installed... B-Body {I used 68-70 Charger Dodge Plymouth Adapter seat bracket I believe they were} mounts/brackets/sliders, sliders come with the seat bottoms if I remember correctly... just not installed.... I purchased the mounts/brackets & sliders are ProCar/Scat units too, I got the seats from Jegs & the mounts/sliders from Summit, they were of decent quality, had plenty of adjustment, painted nicely gloss Black, had all the hardware except the bolts for the bolting them to the floor, I used some 3/8" grade 8 bolts & fender washers w/nylocks nuts underneath & it was cheap enough, that I didn't think it was worth all the extra time, money or running around finding materials, painting etc. for fabbing them up... I would recommend them to anyone... what a completely different ride & comfort, great bolsters & head rests, that holds you in the seat much better, especially compared to the old bench seat & mine was near perfect too...
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I had to drill 2 inner holes in the floor pan on either side, there were no holes for the inner mounting adapter bracket bolts, because it was a bench seat car originally... if the car came with buckets you won't need to drill them, the exisisting original outer seat bolt holes lined up perfectly too..