The belt tensioner pulley bolt is reverse thread if I remember correctly.
[EDIT]The one that holds the pulley one, not the ones that hold the bracket to the motor[/EDIT]
But apart from that, I can't remember any.
And my power steering pump bolts were impossible to get off.
I rounded 2 of the bolts, and then gave up.
But yes, give the ex-mani bolts a spray of CRC/WD40 and leave to soak for a while.
They would have gone a bit rusty.
Oh, and when you take the intake manifold runners off, dont drop any bolt down inside the head, they would be difficult to remove to say the least.
Apart from that, just be careful.
Remember, its all aluminium