Try Sailrite.com 2 yrs ago I purchased a jib kit and sewed it myself. $150. If they sew it $300 plus. They have the pattern for the sidewider jib and main sail on their computer. Main sail was like $525 This is a good place to start. Don't bother trying to find a used one...not around since boats are old. If you find one it will probably be worn. My old jib was so worn I could see thru it. The new one is a lot heavier Dracon 4 oz, I believe. Really made a difference.
Good luck
Curt from SW Michigan