I've seen too many mitsu exhaust manifolds crack. Like they really screwed up their 'formula'
My 1st 2.4, manifold had a horrible crack. My nissan, mazda, toyotas - no oe mani cracks
Hacking up a cheap or used ford 2.3sohc header > shave oe mitsu mani, for the flange & mate the tubes
Since the ford also had the exhaust manifold the same side as the mitsu.... could be a quick and dirty way to a 'budget' header
https://www.speedwaymotors.com/Speed...ish,31661.html