finding parts for a V6 to V8 swap

Looking for parts for my 78 mustang II, what I need is well what people have been telling me is I need a sharp cut oil pan to clear rack-n-pinion need different motor mounts and possibly frame mounts. I have a few mags on mustang II (ctmust,paddock,mustunlimited) but they don't sell oil pans and only sell a LH motor mount and I'm sure I need a complete set cause diff mor than likley. also looking for headers for it if I ever get it in dont know if any body sells then or if have to get them custom made????
*************PLEASE HELP***************