Ok I'm 5'9" weigh in at 255/260lbs. Depends on what shift I'm working. I plan on racing a couple of times this year. A hero of mine was very successful in Formula Vee and he was a stout fella. Bill Noble was a hero for a few reasons. One of which he made this fat man realize you didn't have to be ripped and in shape like Mark Martin to win races. There were so many other reasons I admired Bill, but this one is applicable to this post.
Do I plan on losing weight? Heck yeah. Is it going to happen tomorrow? Heck no! Am I not going to race because I'm fat? H**L NO.
Find a car that fits, have a blast!
JMHO
G.