Need Timing Help

[Skeeterman1]

I have a Nissan 1991 Pickup with the KA24 4 cyclinder engine. Single chain timing. Book says to locate RED timing mark on pully for TDC. There are 6 marks on the pulley, but no red. Thinking it has just faded over the years. Which mark is TDC that I need to reference before taking everything down.

Also anyone knw and easy way to get the stinking manifold off. Think I've got 1 nut/bolt hiding from me and I cannot find to to save my life.