Just make sure you need a
evenly spaced port exhaust O O O O
uneven port exhaust OO OO

any car or truck with the same engine as yours I'm sure will fit. Welding isn't worth it, it will crack again, but it could work if the person welding knows how to weld thick cast metals. Be sure your heat shield is still installed over the exhaust manifold. This allows a slower cool down and protects from overheating surrounding parts from melting.
Thanks to Mitsubishi's inferior casting metals they will crack. Be sure your smog legal in your state for modifications to exhaust. Example: header