h22a4 prelude

[selsea09]

OK, im doing a h22a4 swap into my 91 crx hf.
has anyone done this swap?
i have seen the h22a1 (93-97) swap into a crx, but i need to know if there the same bolt up as the h22a4 (98-01).
and what wiring harness i need, and also transmission.

if anyone has some experience of knowledge in this swap please let me know.
i have done a little research and only found the h22a1 93swap. i will continue to research as well.
Thanks.

[CBags04]

They are for all intensive purposes identical. a4 is OBD2 though, which brings along a knock sensor and an egr valve.