when it comes to handling with the H series in any 5th gen civ. there are mixed reviews about poor and normal handling. I believe that since there are different mount kits out there they will all be positioning the motor in slightly different areas, if you notice on a lot of the prelude swaps that the motor tilts backwards. AC is not an option, unless you want to fabricate something customer to keep your AC and I am not sure how you will go about that. I have said this before and I will say it again. My opinion would be to go with a B series considering how abundant they are and how much aftermarket support there is for that motor. True, you don't have to mess with the head and compression and shit like that to get it moving but your also adding a large amount of weight as oppossed to the B to the car.
Personally, i would put a B18c5 in a delsol, with bolt on's it is for sure a low 13 second ride.......
Milan