About the gear grinding.
These old Fords, only had a synchro between 2nd and 3rd. Works going up (1 to 2 to 3) or going down (3 to 2). Downshifting to 1st without a grind requires a COMPLETE stop. 1st and Reverse are on the same shaft so no synchro into Reverse either, BTW.
Put gas in the tank...