They will fit the 351w but not clear the steering shaft. I found this out the hard way!!
You need the shorties for a 79-93 mustang with a 351w.
BBK makes a set and they will also fit the H-pipe.
Since the 351w is wider than a 302, the exhaust tubes on the headers are routed different.(because of the steering shaft)
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'82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.
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