My center speaker has gone fuzzy after 23 years of hard earned service. so after doing some basic checks, I found an 8ohm 6.5" mid-bass woofer that'll fit just right with some modification. It's too late to fit it in tonight, but tomorrow will be the true test of all those screws and bolts in the dashboard (or if it'll even work properly) lol.
Update: Ive fitted it, it works (kind of) and the only thing I have to do is trim the grill to fit better with the sound insulation i put in. The only problem is it needs more power. I suspect the head unit doesnt have enough power to overcome the magnet stregnth. I would enter the HU-803 secret menu to ajust the outpot but the display stopped working about a year ago (I've memorised all the other radio options and it still works). The alternative is get a mini amp just to boost the output or get a spares or repair HU-803 and swap out the display board.