No problem, man. Good luck with it. If you need to cut into the fender, you could use one of them drummel tools. I bought mine with attachments years ago, so don't really recall the price on that (I dunno, maybe $30 or something). I've used it so many times on various projects, I'm sure it paid for itself several times over by now.
Anyways, saw into the fender where you need to, sand down the rough edges, and you're good to go.