This one is a no brainer, of cos the kancil la. Furthermore, Tiara parts change is expensive and therefore maintenance may be expensive.

will leave that to the modders to comment. If you're gonna mod the engine, why not just get a new viva elite/proton blm? worry free from engine defects, and no need spend time at the workshops. Just drive the damn car for few years until u earning good cash and buy a turbo instead.