Hi I was given a 1995 Laser, seems in good shape, without the centerboard, tiller, sail and lines.
What do I need to rig it? Length and size of lines? Is there a kit? best place to purchase? It seems to have all the blocks and cleats.
That's a good place to start. What I always recommend is to go to the top sailors, who usually have tons of reasonably good used sails. They're generally also pretty bad at marketing them, so you have to be a bit more active yourself. Are you located in, or close to, an active Laser sailing area?
(I have to go to the sailmaker now but can help later with contacts.)