There's some interesting info at this link concerning the Ford engine line.

http://en.wikipedia.org/wiki/Ford_FE_engine

At any rate, I think, as Big Jim stated, you should be fine with those 352 exhaust manifolds.
Karl

*** It's all about consistency! *** *** Previously 88SVT *** 06 F150 Supercrew 5.4L FX4 98 SVT Contour #4362 Born 1/6/1998 86 Ranger GT (For Sale) 69 Fiat 850 Sport Spider (For Sale) 67 Formula-S Barracuda