I have a 92 dx civic I got for nothing with bad 5 speed tranny. Stock d15b7 has 147000. I just got a d16z6 engine and trans (complete minus tb) that was in a 94 del sol si. Should I just swap heads and put the tranny in?, Or swap whole guts? Will my stock ecu run both combos till I get money for p28? Any help or opinions would be awesome.