It should be doable... I did install a non-oem bluetooth module on my 03/07 car. However take my advice and instead of going for the antiquated OEM MULF2 module, think about the FISCON from Kufatec (Parrot CK5050). As the SOC is much newer it is much more compact and also more compatible with the phones. It also does not need any coding, it automatically enables itself when installed in the vehicle's MOST bus (fiber-optic).
The OEM is a much more complicated installation, requires a separate antenna and has not been updated (phone compatibility) since 2008.
Don't expect miracles in sound quality either, as none of the modules supports beam-forming mics.
There is also a m0bridge
alternative which has actually been upgraded to the Parrot FC6000 SOC with some special DSPs...