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Other than the engine holding fixture I don’t find there are many “special tools” that can’t be improvised. My first engine, 2.4L was way lighter and I fashioned a set of adapters for my engine stand to engine. With the weight of the later engines, I wouldn’t use them. Being on a budget, and the silly cost of the fixture in 1984 ($650), I improvised.
I don’t use the cam nut tool, if you are referring to the cam sprocket holding tool. When adjusting the cam timing, I don’t torque bolt until I have the best timing. Then torque and recheck. Worst case i need to remove and use the cam-train to hold the sprocket against the bolt to loosen.The later engines didn’t have the huge nut holding the sprocket on the cam. I think it is a 17 or 19mm hexhead.
Other tools:
Crankshaft holding tool, to assemble rods to crank. Metal plate to bolt crankshaft end with the CS vertical.
Mechanical Chain tension device: To hold chain tension on chain to adjust cam timing. Don’t use your oil fed tensioners you plan to run.
Piston Circlip: Rags around rods and a good pair of needle nose pliers.
Cam Chain/Con-Rod holders: Make from 1-1/2 steel pallet banding strap.
Everything else is common stuff.
I have a set of cam chain tensioners that I fabricated from two spring loaded tensioners and the cam chain/Con-Rod holders you can borrow.
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