Zerotohundred

hi there, im a new member but have been visiting this forum for quite a while.

i owned a proton wira 4G15 year 2001. yesterday got a friend want to swap his 4G91 carb engine(currently at old proton saga) with my engine. he said i need to pay only the swap cost. he wont pay anything. he's a foreman so i dont think he will take much money.

so, the question are,

1. is it worth it? i know 4G91 is far better than 4G15 and a lot of mod can be done on it. but still wanna ask is it a good...