modifying saga blm's FM30A gearbox to CK4A's F5M42 gearbox

[VectorX2]

Hi sifu's

i wanna change my saga's FM30A gearbox to CK4A's F5M42 gearbox.

has anyone did dis mod before whether on a saga or any other campro cars?

what should i look out for when doing this mod and what other parts thar i need to change?

thanks.