yeah basicly if ya get a standard 1600 a webber 32/36 and a nice set of headers, the only thing the get had was larger vavles witch make a bit of a diffrence and a cam but there are so many better cams on the market nowadays, it would personally go with what i said about for a nice basic set up thats not to dear
cam regrind $100
webber and manifold $100
exhaust $300
lifters regound $40
that will give you just as good power or better than a gt 1600 for not to much $$$
have a look at this video its basicly the same set up but with low compression making 90hp and sounds great in my opinion
http://www.youtube.com/watch?v=CrvYU8r4zTY
good luck cheers luke