i need some help

[Damone]

just gutted a gs i was planning to klze my 4 cylinder but after gettin the entire thing torn down it seems like i would have to swap all the harnesses in the car including all the dash wiring .does anyone know what exactly i need to swap over? i though i just needed the engine harness but now im not sure

 

[mazdaboyracer]

If you are going 4 cylinder to 6 cylinder, then it's wasier to start with a 6cylinder chassis. Otherwise You have to change a lot of s***. harness, motor mounts, possibly even the fuel pump and clutch and shift linkage.
I've never dealt with the 4bangers, but IMO just find a 6 cyl. chassis.