1958 car with a Powerglide transmission?

Stamped by distributor: F630B
F = Flint, MI
6 = June
30 = 30th
B = for use in a Powerglide car (having hydraulic lifters)

Cast (date) above starter: CON8 F258
F = June
25 = 25th
8 = 1958

In what year truck will you be installing this engine? Use the truck vacuum advance unit for that year. Or, use at least the mounting bracket used for that year truck - the angle of the bracket may be dependent on the location of the front motor mount. A truck with a front motor mount would use the straight bracket vacuum advance, as on VC310; and, the angled bracket (as on VC435) would be used if your truck has side-mount front motor mounts?