Any swap to a non stock carb will require modifying the fuel line, choke, throttle cable, and transmission linkage if an automatic.
PS: Those Aussie Speed headers shown in the first post hang pretty low. I have them on my 66 Valiant 170, and would not drive on the road with them. They will have more road clearance on a 225 but still hang low. Also what year is your car? Those headers only fit up 1966 "A" body.
