Some people told me that making some work on the block by putting a bigger piston is a great invesment, but please tell me how much will it be the effort and will it be worth it... because I personaly think that by having the same pitons only better with different connecting rod it will be a great engine and the block won't be so weak... So my question is making a bigger stroke to the 7mgte will it be whort it by working on the standar of the same ECU factory or will it be better to put another piston without stroking it or putting a bigger piston with a better connecting rod?