#10  
Old 10-16-2010, 01:35 PM
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jumbofordman
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Originally Posted by dgall
I am a newbie to this. I have a '75 f-250 Highboy 4WD with a 390. Do you think the headers and exhaust will fit?
No, they won't. The 390 is a 'FE' engine, and the 400 is a '335' series engine.