Catback install - Invidia R400
 

Hey guys. I'm installing a used Invdia R400 catback tomorrow. However, the oem spring bolts on my car is messed up due to rust. I'm planning to replace them with new ones. but prefers not to get it from the dealer.

What size and length bolts and nuts should I get
1. For the oem spring bolt
2. For the remaining two connections on the exhaust.
3. Is it ok to replace the oem spring bolts with normal bolts? Would it cause any trouble?
Please advise.

Just find oem bolts, nuts, and springs to avoid any headaches. Most likely you can find some for cheap locally.

Bump

You're really better off finding OEM bolts. Cheaper and easier.

I bought all new bolts when I put my used header back together. Got spring bolts from the help section of autozone and high grade thicc bolts, lock washers, washers, and nuts from there too. Use spring bolts at the donut and measure the flanges where you need bolts and buy the correct length based on that. Easy nice and done.