This looks like a very nice setup for beefing up the 4L60E. In combination with a shift kit, etc., I bet the shifting is awesome.

However, a camshaft that provides adequate vacuum at idle must be used. What cam spec number, or combination thereof, gives an indication about cam vacuum at idle? Understanding there probably isn't a hard-and-fast answer, I'm just looking for a rule of thumb to follow.

In addition to replacing the EPC solenoid, where/how does the vacuum line attach at the engine side. Somewhere near the TB, on the intake manifold...?

Does it require a tranny drop?

I'm guessing this install is best left to a Professional Mechanic.