Very Mild 318 Build

food for thought take a block to machine shop with your torque plate and tell him to hone using the torque Plate. Then go home bolt your head on flip the motor over on the stand and run a bore gauge into the bore and see how much taper and out of round you find. Then flip the motor back over take your head off put the torque plate on both of down spend the motor over and check with your bore gauge and see basically 0 taper and 0 out of round.

Torque plates do not simulate what a cylinder head is doing. They try to ,it's a good idea, but they just don't.
That doesn't even figure after the engine gets totally hot. So you probably want to get the engine block up and running temperature somehow stimulate all the stress forces and then go ahead and put the actual cylinder head you'll be using on it flip it over check with your bore gauge and map the cylinder out ...then take your torque plate and **** with the bolt torquing to where you can simulate what that bore was actually doing with the cylinder head torqued and then hone it.
For a mild 318 build? That's pretty much unnecessary. And all that dinkin' around will get you 1 horsepower because you have perfect bores? Each to his own. Your choice on a mild 318.