I am absolutly keeping the x-brace so I do want pipes that'll fit under it. Since I'm keeping my engine mostly stock, I can't imagine that a 1/4 inch difference in the pipes would make much, if any difference in performance.
BTW Bob, except for the small differences from year to year, your car and mine could be twins!Ironically enough, my vert spent its first 20 years just outside of Buffalo, NY. Small world!