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I just bought a HP header and I am about to install it. I just have one problem. I don't have any bolts that connect the header to the downpipe. I was wondering what size bolt I should use and how long. I was also thinking of using crush washers. It shouldn't make a difference if i use regular bolts and nuts and not the OEM spring.

Thanks

 
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its a set of spring bolts, and you should use the spring bolts, because they center the donut and hold even pressure on it, it also allows the connection to flex a little bit, which it needs to do when the motor rocks.

 
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I was thinking about the flexing of the connection but didn't think it was that big of a deal. If I use the spring bolt I am going to need new nuts since the nuts are welded to the stock header. Do you know what size nut I am going to need. Also do I need a bolt too of does the bolt come off or just the spring.

Anybody know what excally I can reuse adn what new parts I have to buy for the header to downpipe?

 
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How hard is it to go to home depot with the spring bolts and find a pair of nuts that fit?

 
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The nuts u need are M8 x 1.25 thread pitch. I couldn't find any local stores that sold metric hardware so I ordered from http://www.boltdepot.com/.

 
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subscirbe for nuts i need to buy

 
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Those are the nuts.....I found them at a Home Depot

 
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got em at Kragen auto