I will need to get a new oilpan, probably OEM style to fit e-body.

exhaust system? I am assuming headers with dual exhausts of 2.25 to 2.50"? Yes, correct, flowmaster mufflers

Offenhauser dual plane intake

Carburetor, a new will be selected probably 650-750

Heads are 3418915 castings modified to 2,02 inlet
No further specs. CC are estimated. Stock CC are 65. guess they have been decked for straight ness, do not know how much it will influence. If accurate CC and other specs. are necessary I need to take heads off and measure. I can do that, they have to come off anyway.

Regarding quench, That is for KB190 as I understand , have learned 0,40 is the goal, and this should be obtained by using 0,39 gasket.
If machining is required, is it then the piston to machine, I can do that in a lathe.

KB107 is non quench piston, and shall not be machined am I right ?

Thanks for your interest 451Mopar