buy any cars of ur dream from cotonou 2 9ja call jide on 08097032706

Hi ,
i need you to advice me on how to identify a good engine for my car. i drive a toyota camry 97model (Tiny rear light lik our people in Ladipo call it).
i am planning to change the engine. the present engine has this funny crank shaft noise, d oil pump isnt working properly and the gear selection doesnt respond as fast as i want it to.
i was told there are 2 types of engine for the car 3s and 5s. 5s being the better. how do i identy the 5s engine, how much will it cost comin in from cotonou.
i knw i should go with my mech to check it out but i want to have an idea before he dupes me. he told me the boral of d engine is 70k but i got a full engine with the gear box for same 70k at ladipo but the seller says he will collect my old engine. i told my mech about it and he says they are tryin to play a fast one on me.
Pls help.

thanks