4g91, 4g92 non mivec, 4g92 mivec

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hello everyone..i'm newbie here and really2 need advices from otai2 here..im curently using 4g13p and1.5 gearbox auto...the poblem is the fc for my car is crazy..then.. i want to change the engine..i want an engine which has good fc and power..rite now i dont know what type of engine suits me best..i'm not someone who drive at high speed, more to daily use..but we dont know what will happen in the future rite :shades_smile: ..never get any summoned because of speed..rite now my best choice is 4g92 mivec md...hehehe...im love it because it has "mivec" on it...so..what is the estimated price for it...half cut + fully installation...and can someone give advice what part need to change if i want to change the engine. thanks for helping me...