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For the cost of the FI setup you could send it to Sean Murphy Induction in Huntington Beach Calif. to have it pro rebuilt and the 3.9 would idle like a whisper. What CFM is it, in other words is it sized to the 3.9?
4160 want to say it is 450 cfm. Size wise it's fine for the motor but it sat with ethanol fuel and I think it screwed it. So right now I think it's new carb or a FI setup.
Had to take a peek at the headers. Came with everything to install I was surprised. Also surprised they are a Holley product.
O'Reily's is not currently in my good graces my exhaust pipe was supposed to be in yesterday, it still hasn't arrived. Supposed to call me tomorrow with a update.
So supposedly after stopping in there 2 times today to chat with the Manager, the exhaust pipe will be there first thing tomorrow morning.
If that's the case I will build the exhaust tomorrow. Headers into 2.5" tube to MagnaFlow Rumble series 2 chamber mufflers, than exit on each side before the rear wheel well.