IF your looking for a shop to do this work. I personally would go to these guys. Greg Timms. is a great builder https://www.performanceworkshop.net/

if you want to buy an engine kit Here is where I go to get all the AA perfomrance parts. http://carcraftstore.com/ they have the best prices. Also good prices on valve jobs!!!

If your in the orange county area Call or text Eddy and Daves Garage in orange. He can get Empi Wolfsburg west and many other suppliers parts. Plus he has used parts sometimes. This is who I use.+17149979373
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FYI I am not affiliated with any of these places. This is just where I go to get parts. I have had great success with buying parts from these guys. Good people great prices.