Ok I've got one. This is what I have so far:

The VIN prefix: 1P352T
1 = 1961
P = Dubl-Duti Package delivery
35 = 1-Ton 125wb
2 = Chassis & Cowl
T = Tarrytown NY

Head Casting = 3836848 / GM 16 / CON 9 / F 9 0 / (#s by plugs) = B51 848 850
3836848 = 1956-62 235 c.i.
F90 = 06-09-1960

Block Casting = 3764476 / GM 8 / D 7 1 / CON 4
3764476 = 56or58-62 Truck 235 c.i.
D71 = 04-07-1961

Serial = F04I9K 1 68

Please let me know if I am screwing anything up here but I'm having the devil's own time decoding the engine serial # and that is what I need some help with. Most serial format sites stop at 1957 or I simply cannot find my format.