well lads looking on ebay and just wondering wat is the biggest size of throttle body that a zetec can take. i seen ones rangeing from 45mm to 78mm wat size would be the best????????????????????????????????????????????????????????????????????? cheers

I am using a 2.3l ford and it uses the stock 52mm but many are using 65-80mm. Going much bigger makes it hard to maintain low end stability if I remember correctly---btw this is under high boost as well---
I found a dual 52mm oval throatal body I may try and use.
Dale