Quite hard, you need hasport engine mounting kit. No engine modification needed on chasis. If you got a Vti-r, it would be better solution to go turbo. People will say that the h22a will be too heavy and it wont handle too good. The handling should be fine, as long as you get some good coilovers.
Hasport engine mounts and avid driveshaft(good quality)
The engine height is not bad in ek civic. i think it will handle fine so all those rumors dont believe..haha