That was a ref. to the gasket bore size. Notice the extra nominal rise in compresion from 9.33 to 9.38.
.090 is alot to overbore the block. It is possible. Sonic check it first.
There is a Mopar shop, can't remember who at this moment, that bores 318's out to a 4 inch size and strokes them with a 4 inch crank.
