I want to install factory ac in my 67 camaro. What is the best way to go about this? right now nothing is connected or installed in the car. IS their a kit or what wouls i need to do this? The car orignally came with factory A/C

The car HAD factory AC?
If so, determine what is missing.
If the engine compartment components like COMPRESSOR, CONDENSER, LINES are what is missing, that is a simple remedy if the Evaporator and case are still intact along with the interior venting and controls.

If more than that is missing, Consider a Classic Auto AC Kit. (http://www.bought4less.com/bought4less/prod-ff80808116f363070116f36a8dfa04b5.html)
It is a Complete AC/Heat/ Defrost system designed for the 67-68 Camaro.

Thanks