440/520 Stroker with max wedge exhaust manifolds question

Carnut68 said

Just put some TTi headers on it and be done with it. Expensive yes. You have to pay to play. You will only buy one set. Mine are 29 yrs old and in great shape. The crank. I agree with post #38, but they are too expensive to make work in a 400 block as opposed to buying aftermarket.

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Agree , I read that not only are you losing the nitrided finish on the crank you are also reducing the overall strength of the crank.
A friend of mine in Ozark, AL, has done my machine work on the motors.
His take was cutting the crank down and buying aftermarket caps was not a good idea. He has built many class racers motors, all Mopar
The other option was to machine the crank bores to accept a std 440 crank.
Was told thereis too much meat to take reducing block strength considerably. I'm talking about 600+ hp motors, which will probably need block fill if they're more than 30 over