according to thehondapartsstore.com and Acuraoemparts.com:

L = 51215-SR3-000/-N10 (ABS)
R = 51210-SR3-000/-N10 (ABS)

same as an EG civic and DC teg. this probably doesn't match what (if anything) is cast into the piece, so no idea what the 2 different numbers you list are. something about that seems strange to me so I would do some more research (find someone with a stock del Sol Vtec and find out)