original Acura's were Integras. (in 1986...I know cause I had one...)now...RSX and RSX-S are the same car on the outside...engines and trannies are different.RSX-S is a 6 spd, 200 hp engine, with leather.Only the 2003-2006 have a different trunk lid, it's higher and some have a 'wing'...If the car has different 'trim' it's because someone put something on...they didn't come 'trimmed' (extras cost $3000.)so I think you need to get your facts straight..why not go to www.acura.comwww.acurazine.comwww.google.com (and ask for acura's)