thanks for everyones help so far but still lacking that SOLID info needed.

ew4 = d15a3, right?? but d15a3 not = to "d" series????

does not make since to me. if what i am trying to find out is true it would be change the way people take a 1st gen civic/rex. i know some of you are going to say no, but WHY?? has anyone every tried??? have you tried bolting d series to 1st gen trans??? d series head to 1st gen???? someone has to have tech knowledge.....