Sometimes these things can be a *****, sometimes the "shortcut" takes more time than simply removing items, even the manifold. Yes, I still have some "shaved" tools. Also slotting a hex screw can be helpful. Little bungie cords come in really handy..
I can remember on an old Saab 99, there was one screw on the powerpack to R and R, I could never see it, could only feel it.

But my '80 300D is quite EZ to repair and service.

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Adrian
'80 Mercedes 300D ..sold..
two Diesel VW caddies, old ones ..sold..
'96 Saab 900S