OK... I think I have it figured out, thanks to HondaSwap's Reference Section. I have a D15B2 (4th gen DX motor) mated to a 4th gen HF tranny. I know I make less than the 92 horses that it's rated for, due in part to the tranny. What I would like to do, after doing some simple research, is put a D16A8 or 9 in it, but something tells me that they are hard to find. I think I will have to settle for a D16A3. Which leads me back to the beginning:
Will a D16A3 drop in to a 4th gen body without modification?