I have one installed in mine. It works great!
You can see my instalation pictures here:
http://www.imagestation.com/album/?id=4290013855
I have the Greddy Full Auto Timer, It is very compact, I installed it inside my glove compatment so nobody can see it. There are a few out there, I would reccomend you go with the major brands: Blitz, HKS, A'PEXi or Greddy.
I got mine from Exhaust Depot (Hector). He can ship it with the installation harness and vehicle specific instructions. Buy the one that suits your needs and budget.
Ian