vr4 or 4g63t engine from rv-r is suitable for ur perdana.i got a few friends
driving perdana with those engine.powerful n reliable.

engine doesnt have auto or manual... transmission depends on gearbox...
yeap... vr4 rs is a good choice... but i guess vr4 comes in manual... dont have auto i guess, i not so sure... try consult ur mech if vr4 can use back ur standard auto gearbox or not... (if ur current gearbox is auto)...
sifo,vr4 auto got.taipa at h/cut.not as popular as the manual counterpart.:)