Try Macvud Car styling or else Adv#nce Car Audio (*not sure whether they would have). The Projector lamps that come for the civic isn't bright as much as the stock lamp.Therefore its better to upgrade to HIDs if you are going for projector lamps:).
+1 Yah its not advisable to shift from D to N while driving. Also if one accidently shifts to "R" while shifting from D to N that would be the end of the gearbox i guess
Bro the Beat barell will not give you the Turbo sound.Try Euronippon wadduwa. You might be able to source GT parts
If u are making it look like a GT you will have to change the Front & rear bumpers,Headlamps including grille,bonnet and Tail lamps