'63 Valiant Newbie

You have some fancy aftermarket valve cover bolts. A magnet will tell you whether it's an aluminum block or cast iron. Post the block number and/or stamped letters/numbers that should be on the upper block surface on the passenger side front. You need to look down in the crack between the alternator bracket and the valve cover to see it. A stamped '63 block I.D. number should start with T......then either a 17 or 22 for 170 or 225.