hi i'm new to this forum and have owned many g malibus and want to try and vid and pic a walk thru rear disk brake build if its something gbods mite be interested in I've built them for my 78 m-classic in 1982 now am set to do my 79.the parts I will use are junk yard finds or cheap in stores.i will show how to disassemble and reuse your proportioning valve and make and measure brackets that will fit under almost any 15''rim. what do I want...to know what headers and exhaust work and fit best,lowlife 79.