engine/chassis codes are awesome for license plates.. noone knows what it means unless they know cars real well.
a kid i know that has a JDM K20A in his acura RSX has a plate that says "JDM*DC5"
friend's plate on his 240sx says "S13KA-T", he's got the stock KA24DE turbo'ed.
another friend has a plate for his 240SX coupe that say "RB26-TT".. he's got the RB26DETT inside.
i have a plate ordered that says "U12DET" for when i do the Bluebird SR20DET swap in my sentra.