You could try your luck on local shops, but thats a crap shoot and most shops only do auto's.
I'd look around for a JDM engine importer and pick up another one. should be reasonably priced. $350-450 is typical.
Antihero
Putting AMS garbage, and $500 ebay wheels on a Z is like dressing a Victorias Secret model in a Walmart dress and Payless shoes. You're embarrassing yourself.