I've decided to go with a 3" cowl. WHo makes a quality 3" cowl. Is a finished underside absolutly necessary? I wanted cervini's but I couldnt find a 3" cowl from them only 2.5" to 4" . Let me know Thanks.
Cervinies should sell a 3 inch, but Harwood makes a very nice hood, also i've heard Design Concepts makes a nice hood.
As for the underside, it gives the hood more structural rigidity, less flex and overall just a better investment. While it's not entirely necessary, i'd recommend it.
Boss Inc hood is the most badass hood I have seen. I have one on my car. I t says it's a 1 1/2 inch hood but claims it's 3 inch's underneath. It fit's my 351W.
I had a Kenean 3" cowl and the fit was perfect. Just bolted it right on and the seems and everything lined up perfect, i'm getting another one for this mustang.
i like my 3" design concepts easy install, isn't finished under the hood and you need to cutout the rear air vents if you want them to be functional but i didn't mind since i save 200 bux over a cervinis including shipping.