Hello po mga sirs,

Our family owns an old school 1980 toyota tamaraw. It is now using a 4k engine which i feel na medyo kailangan na palitan kse medyo masama na ang menor nya. The engine is mated to the original side shift 3k transmission. Anu po ba ma suggest nyo na gasoline or diesel fed engine to replace yung 4k na pwedeng salpak lang din like the 4k na matipid po sana sa gas or diesel? Hopefully po ay mas mapaganda rin ang hatak.
Im open to any gas or diesel suggestions. Salamat po.