StangEatsRice

Nutsize for stock h to stock monifolds. i tried 17mm and 19mm to small and to big. Is it 18mm, 3/4?? I was told before it was a 15mm-16mm... i guess they were wrong... Will i be able to just loosen the nut or do i have to brace the bolt as i undo the nut. What a pain in the *** to get to. I have a 3/8 wrench with 12inch extension and swivel socket and it still sucks. The car is on ramps as we speak and i dont have a 18mm bolt... ...

Mark99GT

Mine were 15mm. I had to go out and buy a 15mm deepsocket specifically for this. I went to Ford to pick up a new nut a little while agoand the new ones were 15mm too. Ill be shocked if you have 18mm nuts on there. Are you usingDEEP sockets? Id also get more than 12" in extensions.

Brute03

mine were also 15mm. if you use a regular socket it's gonna seem like it's too small, you'll need a deep one