Mi 4runner has 280 000 miles and a few problems , like in the mornings you can see a little blue smoke out of the exaust and its getting more and more noticeable over time and i feel i lost some power over the las months , i was wondering if i could replace my engine with a jdm one and like how mich are they going for here in san diego and if having a jdm engine here in california i would be able to pass smog