guys, i'm thinking of replacing the engine of my vanette (if possible). gusto ko kase yung matipid sa fuel ang more power. i'm thinking of replacing it with a diesel engine although i dont have any idea about replacing engines

tanong ko lang po, what engines are good candidates as replacement? what are the pros and cons when you have your engine replaced? anu pang mga parts ang kelangan palitan din pag nagpalit ka ng engine? and mga magkano kaya estimate cost ng parts ang labor?

hope i could get feedback from you guys, talagang wala kong kaalam-alam sa ganyang bagay kase. alam ko lang is, mahal ko yung van ko, pero mahal na din ang gas