Ummm, this whole site is dedicated to that kind of thing. You need to make good use of the search function, before asking the same questions that have been answered 1000 times--that way you won't get flamed.
The 'kits' are from JTR, MSA, John's Cars, Scarab (Hooker), & custom one-offs. Google search each one and read read read. BTW, JTR is the most popular on this site.
Welcome.
Davy