AN fittings??

mopowers said

I've used alumnium fittings on steel adapters with no problems. I can't imagine the fitting companies would sell many steel adapter fittings (or even make them) if using them with aluminum AN fittings was an issue.

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I just like to check with the experienced LOL... Kind of what the forum is for helping each other out. I appreciate you chiming in with an answer and I'm probably just going to go ahead and save myself another $15 an order the top one. I don't need to save 3 oz of weight and there's a little elbows that are going to go in between the two carburetors so they're not going to be highly visible either..