header question

Im new to this and couldnt find any info while i searched, anywho my question is will these fit on my 68 cuda
http://www.ttiexhaust.com/Header-Small Block/340ABE.htm
thanks im assuming they fit on 318 340's. My other question is if they do fit does the torsion bar go through the header or on the side. Thanks, if possible im wondering if you could attach a pic of the headers just so i get an idea of how they work. Thanks again.