Guys .. need advice here..

I used to drive UNSER .. Now change car with my wife and I travel alone ( outstation ) . with me now my wife KANCIL EX850 2002 manual , standard. just changed seat to L2 .

I want to do some modification to suit me . I'm 5'11'' ( long legs ) . I drive to various parts of malaysia for works... 500km one way as I lives in Terengganu.

my questions :

1. what is the best suspension to put in ?
2. what type of Rims and tyres to make it more stable ?
3. Anything I can do with engine ? other than change the engine
4. Any other ideas ?

If I cannot make it comfortable for long drive then I have to get Triton la.

Thanks guys .. I guess triton or Hilux 4x2

i have 850 stock 2003 kancil .

what rims is the best ( NOT TOO expensive la )
speakers dah pecah sound ? whud i change to new speaker or sound system ?

its silver color is bit spoilt.. new color ?

what is the price for new standard kancil tyre 155/70/12 in KL or selangor .. thinking of buying today