Big tube header vs small tube header on a stroker

Gonna run 1 5/8 headers(Dougs), at least for a season, on my new stroker motor with eddies. Primarily because i have them, and they fit nice.
Wonder how much doing so will cost compared to a 1 7/8 header?
Not sure if this helps you at all, but my car currently has 1 3/4" Headman Hustlers on it. I've been curious for years if stepping up to 1 7/8 would be worth the trouble.