My recommendation is email John P., he's done numerous Zetec heads and is a 40yr retiree Ford Engineer. He's pretty well known in the ZX2 community. He does top notch work, as for price, well I'm sure that will depend on the job. Here's his email, give him a shout. He's located in Cape Coral, FL.

John P.'s Email:
jp0055@aol.com