Hi from the UK and welcome to HDF. Your stock tyre was a 160/17, so the 180 is already oversize. Check the website of your preferred brand for recommended rim width. Your rim is 4.5" and the 200/55s I have checked call for a minimum of 6".
I have a buddy of mine with an 04 duece that he put a 18" metzler 200 on, he haqd to shave the inner strut a little and he got a spacer for his pulley from vulcan. it just barely fits but he has been riding on it for about 15k miles so far