hello PATTAS, i also driving proton iswara 1995 1.3 manual sedan,but i already convert to 4G92 MIVEC last 5 years back... so far so good...
yes u need to modified the engine mounting...
i will suggest to u 4g91 dohc 1.5 or 4g92 mivec dohc 1.6....all r NA engine..
but now mivec half cut cost u around rm 7000.00 not include yet the tear and wear parts and inspection fees all add up almost rm 10k..plus minus la
4g91 cost u around rm 3k or 3.5k all in will be 5k maybe la
actually is enough for iswara with 4g91 1.5 dohc manual or auto...go for fuel injection..
happy modified bye from stevenmivec kl...