Clifford Header Interference

[jnordness]

Is anyone else running Clifford dual exhaust headers on a stock-ish 258? I've noticed that the inner flange is slightly bumping up against the engine mount. I don't think it's really causing a problem, but I don't think it's necessarily a good thing. I do plan on doing the stroker thing someday, so I plan on modifying them to fit the 4.0l head. Another thing I'm wondering is, what is the exhaust port height difference between the 258 head and the 4.0l head?

[IH 392]

The headers won't interchange between the 258's and 4.0's, the 4.0's have 6 exhaust ports, the 258's only have 5 exhaust ports, 3/4 is common but bigger and the 258's are rectangular and the 4.0's are round.