[onZedge]

If you have the cast-iron headers, they can come out from above, provided:
- remove the six header flange bolts
- you take the exhaust manifold studs out (at least the 2-3 header studs)
- remove the 2-3 header first, and then the 1-4 header (it doesn't look like it makes sense to do it in that order, but you'll understand if you do decide to do it)

I just R&R'd the oil cooler yesterday. I had these off the car: cam tower, head, exhaust manifolds, PS pump, water pump, pressure sender and heat shield and it was STILL a a little bit of a PITA. Suprisingly, the PS reservoir being in the way was not an issue.

My $0.02: It just seems insane to me that anyone would try this without at least removing the headers.