What sets a Motegi apart from a non Motegi Prelude is the body kit, lowered suspension, 17" alloy wheels and Motegi boot lid bagde. All of these parts were optional extras on standard Preludes but were supplied as standard on the Motegi.
My 2.2VTi (H22A8 like you) is a non-Motegi, however it was supplied with the optional 17" alloy wheels fitted. Since buying the car in 2005, I've fitted the body kit and also replaced the standard suspension with the optional lowered sports suspension, so my car is basically a (non-official) Motegi but minus the boot lid badge.
For more info on my car, go to -
My Car, however there have been a few changes to the car recently (including clutch and flywheel) which haven't been added there yet.