be careful with shaving your head, you now have a higher CR. And I hope you plan on ditching the stock pistons and rods. The stock ones will fail under pressure over 6-8psi easily. Get pistons from
www.jepistons.com and get rods from either Eagle or from
www.seanhylandfocus.com
Also, you dont wanna use T/C with NOS on a zetec engine.