I have a set of BBC Eddie Marine Thunder exhaust with the longer 16 inch risers. A great replacement for stock or mildly modified engines. They were purchased this year and have approx 20 hours of time. They are in very good condition. Almost new. I had a 540 built and it simply isn’t enough exhaust for the engine. 1000.00 firm . Plus shipping. Will post some pics soon.

Sold

Now you have me worried. I have a 502 with an M3 ProCharger and am dumping the merc manifolds to flow more. I wanted to use EMI as I have on my SBC's. Will these not flow enough? Thx!

Blower motors aren’t affected by exhaust as much as na engines are.