dear i hv kia spectra my daily drive is about 150km, i live in sadiqabad so availabily of parts are issue and engine is weak too i want to change it, i want eocomical engine of toyota, my friend got old part shop in sadiqabad, he has 5afe and 4efe engines ,which one is good for my car, wo keh raha hai k 5afe acha rahy ga jabke me samajhta hoo k 4efe 1300cc hai wo achi avg de ga cng and petrl p ,gear box wohi lagain gy spectra wala sirf engine change karain gy total 60000 lega mjhse mera engine khud rakhy ga wo keh chuka hai k me alteration karloo ga gear box me fit hojae ga 5afe me aur kaha k pehle buhut 5afe engine dal chuka hoo hundai taxi me un k apne gear k sath running perfect ziada alteration b nhi karni pary gi gody exel waghera me,what do u think guyz i m waiting for ur best advises, my spectra cng average is 55l local 80 long 120km