Exhaust Manifold bolts

What are the size of the exhaust manifold screws and bolts. Two of mine on my Prelude are missing. I went out to my civic and took one out to see if they are the same size and they are. So I wanted to know if any one knew the size. Honda wants $5 a screw, so I was thinking of going to Pep Boys.

About a year ago something fell of the back of a truck and got stuck up under my car. It messed up the exhaust system and broke 6 out of 9? bolts. I had to have two of them tapped out because they broke off too much in the head. These are the two screws that keep falling out. So I want to get the original size, so that I can go up a size to make them stay in till I get my civic fixed and put the Lude head on the shop. Or what do you all suggest.

Ive been looking all over the internet and havent come up with anything, all I can suggest is asking the dealer. If you have a tap set then they usually come with thread gauges so you can measure them.

I don't own a tap set, but thanks for trying to get the info.

I don't own a tap set, but thanks for trying to get the info.
No problem, wish I couldve helped.