On Petrol I found 5AFE to be very powerful. The guy i bought engines from Had two 5AFE very clean and the one that was more clean than my engine was sold one day ago.
Now there are two types of engines in Market thats what people say. One that come via torkham burder they get kinda abused in transportation.
Other via containers on ISB dry port. the one i got was dry port one as per the seller. Now the gear of this engine is more expensive than engine
the gear is around 18 to 20 thousand for a imported qabli one. Some of these engines even got original oil and also original gear oil in them and one engine he says he sold had full engine oil in it.
Mostly people do is they sell you original qabli engine and civil abused gear now make sure you get good gear as its very expensive to replace.
The engine i bought had gear attached to it not like other people who sell engines than provide you gear while the swap is goin on.