Downey Headers

I posted in the wrong forum earlier...lol...so I bought a truck from a friend who installed Downey Off-Road headers on a 2001 Pre-Runner V6 model. A few bolts came loose on one side. Should I remove them and replace the gaskets? Where would I buy gaskets for them anyway (Downey is now out of business). Does anyone know the primary tube diameter so I can get some made if needed?

 

Stock gasket should work fine . (Toyota)

 

But if they aren't leaking I wouldn't worry about taking them off. Just replace the bolts and be done with it. It's a shame Downey's gone. I bought a ton of stuff from them when I was younger. Bought most of my power steering stuff and a header from them for my FJ40 7-8 years ago too. Great stuff and customer service they just got caught behind the times from their competition.

 

X2. Just keep in mind you can always replace with the stock gasket if tightening the bolts doesn't seal .