I just bought a Karrman Ghia with a 1600 twin port, its good a mechanical distributor, and single carby.
My question is whats the easiest and cheapest way to get a bit more power from these engines or am i wasting my time>??
Thanks

Suggest you do a search, see the search in the header banner up the top.

There are a few fairly basic and relatively cheap things you can do to get a reasonable increase in power.

yeah do a search. You will find extractors and Kadrons (inexpensive twin carbs) will come up a lot