I thought you were getting a Laser. Once you get experience sailing the Laser (at least 20 outings), you can consider a Laser 2 (with a crew obviously).
But if you insist on a Laser 2, some parts are available from Intensity Sails: http://www.intensitysails.com/laiisapaandg.html
Ive had a Sunfish for a year and have gone out more than 20 times. I wanted something with more performance hence the Laser 1. I also like the comfort and space of a Laser 2. I like exploring. So I will get both the Laser 1 and the Laser 2.
Is it hard finding a harness and trapeze for a Laser 2.? I googled it and found one on ebay but the bidding session has expired. Going to try to contact the seller.