340 or 318 turbo
This is one of my choices for a manifold not because of the air gap but because of the bosses, the versatility of head options and price.
http://item.mobileweb.ebay.com/viewitem?itemId=330869715498&cmd=VIDESC
I am not trying to sell this thing to any one just asking for opinions and if their is one you think might work better let me know.
I have one of those manifolds on my 360 Magnum, which is equipped with a Vortech supercharger and it seems to work great, having given me zero issues in the five years I have been using it.
Mine was made in China, but at the time I bought it, the Edelbrock Air Gap manifolds were being advertised, but were delayed in distribution because of some early casting issues, and I couldn't find one to buy, anywhere.
So, I ended up buying this one and it has worked flawlessly.
If "made in China" is not a problem for you, I don't think you'll have any issues with this manifold. Some of them have had reports of core-shift/port alignment issues, but mine didn't.
Apparently, that is only a problem with certain of the manifolds; many are A-OK in that regard. I'm not sure how much of a problem that would be (or, IF it would even be a problem,) on a boosted engine, anyway. Boost seems to gloss over certain issues...
That's all I know about that manifold. I think it's sold by "Professional Products" maybe under the name "Crosswind."
Good luck...:coffee2:
