IMO, the kb162 is still a good option for a build like this.
In an uncut block it's supposedly down the hole .024, and according to the catalog has a 5cc valve pocket.
At +.030 over with a steel shim gasket and a 78cc head, it comes out to 9.5:1cr, and 9.3 with an 80cc head, and would have decent quench in that configuration.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads