Rocking the d13

So I have a couple of questions on the d13... Firstly, how big of a job is changing the single carb to a dual carb? And secondly, how would I go about getting boosted? Noticed there's a ton of room due to the exhaust manifold being located at the front of engine, but what kind of work would need to be done to pull off a turbo?
Any light shed on the matter would be much appreciated
Any light shed on the matter would be much appreciated
