Advice before you drop it in:
Check ALL of your timing components, harmonic balancers, water pump, belts, tensioners, and make sure all the timing marks are still there. The nightmare I've had so far is that each of mine has systematically broken off so it took ages to find top dead centre, cams were retarded instead of advanced or neutral and I can't set a base idle because there's no timing marks to use. Which means ANOTHER new harmonic balancer. So all I'm gonna say is overhaul that entire system before you drop it in because if 1 thing goes wrong, BANG your engine is dead. Apart from that the engine has been fine, you're probably gonna wanna reseal the entire head though so new gaskets all round, new rear main seal, new seals on anything and everything, make it tight.
Also the o2 sensor on a 4g93p is on the flex pipe not the exhaust manifold, so you're gonna need to either use your stock manifold and run a longer O2 sensor or add a new sensor to your existing exhaust if you're not using the flex pipe from the Proton. Also your reverse lights won't work after the swap, gonna need to wire them in as well.
