Another Header question

My friend and his father own a exhaust shop and I had asked about custom headers. I am hoping to get my 383 in there sooner rather than later. Would it be a good idea to have them build custom fenderwell headers? Or should I ask for regular 1 3/4" full lenght headers? My dad says to just use exhaust manifolds and have them do custom dual exhaust with either an X pipe or an H pipe with some good flowing mufflers... Any opinions are welcome.