225 performance upgrades without pulling engine

Dan Miller said
Gday guys, Im from Australia and own a 66 VC Valiant Regal with a completely stock 225 aside from the addition of electronic ignition. Im wanting to know if putting an Aussiespeed Longrunner 2 bbl manifold and perhaps 400cfm 2bbl carb with extractors is overkill? Or would I be better off just using a 2 bbl short runner manifold and smaller carb? Im not wanting to pull the engine out at this stage by the way, Im just after the right advice for a few extra horses with bolt on gear for now, thanks guys

I'm also in Australia. The best set of headers available here for the money are Hi-Tech in Melbourne & if you use the std 2 bbl manifold with a Holley 350cfm carb, that will give you the best bang for your $. The Aussie std 2 bbl manifold is a lot better design than the US version. You will also need an adapter plate for the holley.