Petty kit car and jig

So it is a 3 piece jig or 3 pieces that you can use individually depending what end needs attention? I guess what I mean does the full chassis sit on the main one or do the small ones attach to the main & the the chassis goes on the assembly. Any pics of the related parts yet? Does the car have a 8.75 in it? Mine came with a quick change but I imagine the kits were varied to fit dif. rule pkg's. Or maybe the Franklin toasted & 8.75 & parts were more readily avail. I wish I wasn't 1/2 a world away from everything I ever interested in! Thanks!