I have all the parts you're looking for! Sadly, my capri (Hull #533) was in a car accident and has gone off to sail the lakes in the sky. Consequently, I have the following:
1. Rudder, tiller and extension $100. This is in good shape. There is a small piece missing from the aft edg of the rudder but otherwise works great and is water tight.
2. Centerboard. $100. Great shape
3. North Sails /Racing $650. I sent the original North Sails to get refurbished at SailCare.com. I have never used them since they got refurbished. They're still in the box. I paid $700 to have them redone. I also had refurbished mainsheet and jibsheets which are included in my asking price.
Love to sell you this stuff and get it out of my garage.