You will need to do the o-rings sooner or later living in a cold climate. That's just my opinion.
I be honest, it's worse then it looks. I could get the manifold up may be a inch on one side then do the other then bolt it back down.
Oh make sure you tighten the fuel line clamps while your in there if you can.
174,000+ miles, 5/20/12 new ej257 short block, 8/20/11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. Also CHECK YOUR OIL, these cars use it.