Hi -

I have an opportunity to buy a 4-barrel "S-Code" cast iron intake manifold for my 1966 Ford F100 that has the stock 352 V-8 engine with 2-barrel carb. From what I've researched, it sounds like the 4-barrel intake will perform slightly better and get better mpg than the stock setup. Is switching to a 4-barrel setup worthwhile? Also, how much is an "S-Code" intake worth?

Thanks!
Dan M.

1966 Ford F100 (x2)