Firstly, I agree with nitrus. Some searching around and some studying would help a lot more than just asking a question blankly. It's like someone's expected to be spoon fed, down the the nuts and bolts. Secondly, I was wondering the same thign as fstrader. What's this topic doing in here when it should be in car mods section. Don't people even bother to look around to see where a topic should go first, before posting? Or maybe ignorance is bliss.
Personally, I find that modifying a carb 1.3 almost a waste of effort and money. On my own choices, I would
1) save money till I have enough to do an engine transplant.
2) maybe get a satria 1.6 (year 1995, since it's cheap now) or putra.