I had a brand new LA Enterprises Kryptonite fuel crank that I used that I had cut down to Chevy rod journals to get a 588 Hemi configuration, easy enough to get the converter adapter pilot, but my existing converter required an extra 1/4" aluminum spacer plate (on top of my .090 mid plate) between the 727 bell housing and engine to get correct converter pull out due to the thicker Krypto crank flange.

My previous combination before the new crank was a Bryant forged 588 combination that was perfectly spaced without the extra aluminum .250 block spacer plate. My Krypto crank did not require a thick adapter like in your picture, just the converter pilot adapter

Randy