I have a 98 avenger with the 4g63 2.5l v6 auto..i want to have a manual trans so would i have to do a whole engine and trans swap or maybe the A543 would bolt up to it? Considering it has the same block as the mitsu 3.0...but i also have a crank sensor connected to it so what would i do to it?

 

There was one shop that did the manual tranny swap , unfortunately they are out of business ... They built a "trigger wheel" to simulate the crank sensor

 

4G63 2.5L?
I think you mean 6G73. The A543 will bolt up, but there's the crank sensor issue.