I was talking to a muffler shop and he said you sure you have the 351 and I go yeah unless someone changed the label engraved on the motor. He said every diagram he looks at for the 351 has dual exits on the passenger side. Mine only has one. I kind of forgot about it and was helping this guy who was having trouble at the gas station starting a 1995 F250 he just bought and he said it had the Windsor and sure enough his exhaust has dual side exits! I don't know that I really like the look of it to be honest but is that how they all came from the factory w/ a 351?
My '85 F-250 and my '95 F-150 both had 351s and single exhaust tips. The '85 was bought new, so I'm sure that was factory. The '95 was 3 years old with 27K on it when I bought it, so it's possible (but unlikely given the low miles) that it was changed by the original owner.
Bizarre. My exhaust look exactly like the 5.0 diagram. I have a Y with the O2 in the center of that, then a 2nd cat and a one in one out muffler. I wonder if somebody re-did the entire exhaust? My truck was low miles 44k when I bought it but it for sure has a new muffler and new pipe from the muffler back. It just looks a lot newer than the other up stream piping. It has a heat shield too and it's def not 2.25 at the cat. More like 3" into 2.5 then down to 2.25