I am curious if anyone has had experience or knows if you can swap a Mazdaspeed3 Transmission into the NA 2.3 straight up? I have an 07 Mazda 3, 2.3L 5-Speed, but am tempted to get the 6-speed in it.

Would I need to swap hubs, driveline, Diffs, etc?

 

no idea why you would want to do that unless you plan on doing mainly autox or circuit races, but yea its a direct swap no mods needed

 

That is beautiful! Thanks Tracker

 

actually hold that enthusiasm, im gonna make sure, but now that i think about it you probably need the ecu as well but i dont think so, im just basing off what one my friends done to his three hes building it for mountain climbs. but thats the ONLY thing i can think of that you might need, im sure the harness will work hopefully it does, sorry to get you excited then to ****** it away from you