hi have a 89 accord auto with a a20a3, the engine has a knock and i cant seem to find a cheap replacement for it. but i do have an extra b20a5 and everything for it in a spare 88 honda prelude si. so my question is will the b20a5 engine and tranny fit in the 89 accord engine bay and bolt up, if so then will i need any custom mounts, like i said i have a 88 prelude si as a parts car to my 88 lude si dd.