Hi, a few hours ago my little g13ba got F|removethispart|@ckd up,
Cyl. head has already some upgrades, but now i have to rebuild the rest of the engine, what tricks or tips de you know to get some more sea-horses out of this little engine?
Till now i've heard about:
-Vitara/tracker pistons
-Vitara/tracker valves

But I realy dont know if they really work and if they are reliable upgrades.

Any other ideas or information about this ones?

I would check out  Zukiengines.com and see what there is to offer.  A well build 1.3l will give you the same power as a 1.6l, but it is a bit more expensive.