Not sure if you are still interested in doing a swap or not, but if so let me know if you need more info! I have a 2.5l swapped Mazda 6 at the moment and love every bit of it!
The ford fusion 2.5l shares the same block as the stock 2.3 from a mazda 6. One big difference is that obviously it is bored out to a 2.5l. Your transmission should bolt right up to the block. I have a 2007 with an ATX and I had no issues mating the two together. If you have a 2005-2007 mazda 6 I believe, The only thing you need is either a throttle body adapter or an intake manifold adapter. I went with a throttle body adapter so as I could run the 2.5 intake manifold because of the larger runners. If you have an older Mazda 6 2003-2005 then there are a few things that need to be swapped between the motors. Im not sure what all they are but I know one thing is that intake camshaft.
Would this work for 08 mazda 6 2.3l, my engine had a slight rattle after warmed up and on low engine load but higher rpms and now it has a slight tick now so I know it’s going to go here soon, If so they have different 2.5 engines and I don’t know which one to order
hey everyone doing this swap myself and came to halt i have a2005 mazda 3just droped a 2011 fusion into it i kept the 2.3 head port and pollised slapped it on and now i cant get her started any help would highly be appreciated