OEM Subwoofer Advice

[Cookietime]

I own a Subaru Legacy 2004 B4 Sedan that had a OEM mcintosh stereo & subwoofer. The previous owner had installed an aftermarket stereo and bypass the mcintosh AMP and rewired the speakers to the stereo head unit. however, he left the macintosh subwoofer out.

 

would it be possible to use the OEM subwoofer on my aftermarket head unit - happy to buy an aftermarket amp. or is possible to replace the OEM subwoofer & amp but utilizing the same space as the OEM subwoofer? think they call air subwoofers (without the box)? unfortunately, boot space is kinda important to me.

 

much appreciate anyone's help in advance.

[boxkita]

the audio section might get more responses. I got nothing sorry.

[Cookietime]

Thanks, mate, I'll give that a try