Hello! New here. and a couple questions..

Hey all! i registered on this site a while back when i bought a 90 and ended up getting rid of it before i got a chance to even transfer the title. Tomorrow im going to be buying a 91 teg ls 2 door. but i have been doing some reasearch and cant seem to find a straight forward answer to the most simple questions crossing my mind.

what are the differences between the model numbers i always see:
da(1-9?)
db (1-9?)

pretty much new to this whole scene im a dsm guy.

the models for the 90-93 integras
the da9 model is the us version of the 2 dr integra
the db1 is the us version of the 4dr integra
the db2 is the us version of the gsr integra
idk the exact model numbers for the models in japan but i do know in japan the diff numbers are the model trims such as in the us we have rs,ls,lss,gs, and gsr they have the da6,da7 ect instead,