Quote:
Originally Posted by Alltezza
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It all comes down to which catback you have. If you have stock catback, stick with the donut gasket. Some catbacks (like perrin) use a flat flange instead.
If you have the JDL FP with a donut flange but get a flat-flange catback down the line, you can always convert the FP into a flat flange. It's super easy.
And while I'm here, I might as well chime in. I have the JDL UEL header and it's been great. It's also super discounted right now. I think I paid like $950 for mine and I still think it was worth it. The only concern is that for some reason JDL likes to put the second O2 bung super close to the flange, so it's a little difficult to do the header/OP connection.