Nightkids, i guess you missed his location.. OP is from sydney. Theres a reason why i suggested contacting Marty @ FHRX. Otherwise i would have lead him towards Phatt or FCA.

In regards to sealing and focusing on the install, i think you have to read my previous posts again, slowly, cus it seems you may have misunderstood a bunch of things.. I never said seal the doors ONLY for the sony coaxials, but seal it for ANY driver/speaker. OP has said himself he wants more midbass output, how do you achieve that with any speaker? seal the doors. simple.

You must not have heard the difference creating a enclosure for a speaker, especially when it comes to mid-bass punch/kick.. If you have then i dont know why you'd argue otherwise. The difference is night and day.

The budget is $300. Morel Maximo coaxials retail for $158 and can definitely be had for less. That leaves plenty for a good install, especially when the op is willing to DIY. All he needs now is some 12ish mm mdf for spacers, some 3mm or 6mm mdf.. mdf that be had for less than $20, or free if he asks for offcuts. then some primer/paint to seal the mdf from moisture (wont need much). cheap paint brushes (or none if he gets primer/paint in a spraycan). some tape. maybe some silicone/sikaflex. maybe some dynamat (no he wont need a bulk or even trunk kit to do the doors).

Im NOT saying to only seal the doors and not upgrade. Im saying with that budget, he can do both. And if he does both, he'll get much more mid-bass performance compared to that same speaker in a leaky door. That's mid-bass performance he asked for in his very first post. Sometimes we need to listen and absorb the customers wishes instead of just recommending x or y brand..

Last post otherwise i'll be going in circles and repeating myself.