So, my builder mate (we'll call him Bob

) wants me to give him a hand rebuilding his '86 RS Turbo. First couple of quick questions I have are re: parts diagrams and workshop manuals.
I've done a few bikes in my past and can usually find online resources for part No's etc but it seems to be a totally different kettle of fish to get this info for older cars,so can anyone here point me in the right direction ? Also being an old git like I am, in my youth Haynes manuals were the go-to for repair info but they seem to get a bad press these days and seeing as I would normally try to get a genuine manufacturer workshop manual anyway for a bike, is summat like this available for the RS Turbo ?
I'm certain there'll be a lot more Q's during this rebuild but these first two will go a long way to helping us get into the meat of this project.
Will post some pics next time I'm at his garage.
TIA.