Civic FD stock dash audio unit query....

[ezem]

IMO, if you'll be keeping the stock HU, better include the plans of having a stand-alone DSP like bit one. but i'd still go the aftermarket HU route. if budget is constraint, i'd go one by one on this pattern: HU > seps > 4ch amp > sub > deadening (optional) > monoamp (optional, if you plan to go full active) > DSP (optional), ipon mode muna kung di pa kaya. Focal and JL Audio are 2 of my favorites, but there are other nice sounding "brands" also.

as for the shop, i'd always recomment Sun-X (look for Erick)...but there's also JC Car Audio and SimpleSound.

just my 2 cents of thought