Assalam Alaikum everyone.My toyota platz is currently running on stock 1.0L 1SZ fe engine with manual tranny. The engine is in no good condition,at the risk of seizing up,So i want to change engine.I dont know what i should do,should i go for overhaul or assembly swap kindly help me,i am so confused and i ll be very thankful to you,Please experts kindly reply me.Thanks 