Never seen a kit other than one that someone may have put together with used parts. It isnt a difficult swap but I'd recommend looking around for the right 5-speed car first, being that you are asking the question in this manner leads me to beleive that you don't have a lot of experience with these cars, how are your mechanical skills in general?
Try to find a 5-speed car first, and if you cant then come on back here and we can break it all down for you.