Year:
A = 1980 l = 1990 y = 2000 a = 2010 l = 2020 y = 2030
b = 1981 m = 1991 1 = 2001 b = 2011 m = 2021 1 = 2031
c = 1982 n = 1992 2 = 2002 c = 2012 n = 2022 2 = 2032
d = 1983 p = 1993 3 = 2003 d = 2013 p = 2023 3 = 2033
e = 1984 r = 1994 4 = 2004 e = 2014 r = 2024 4 = 2034
f = 1985 s = 1995 5 = 2005 f = 2015 s = 2025 5 = 2035
g = 1986 t = 1996 6 = 2006 g = 2016 t = 2026 6 = 2036
h = 1987 v = 1997 7 = 2007 h = 2017 v = 2027 7 = 2037
j = 1988 w = 1998 8 = 2008 j = 2018 w = 2028 8 = 2038
k = 1989 x = 1999 9 = 2009 k = 2019 x = 2029 9 = 2039
Engine:
8th Position (Engine Type)
A - 2.3-Liter 4-Cylinder (Ranger 1997 and older)
B - 2.5-Liter 4-Cylinder Diesel (Ranger)
C - 2.5-Liter 4-Cylinder (Ranger)(2.0 on older Rangers)
E - 2.3-Liter 4-Cylinder Diesel (Mitsubishi)
E - 4.0-Liter 6-Cylinder - SOHC (Explorer, Mountaineer)
F - 7.3-Liter 8-Cylinder Diesel (Econoline)
L - 5.4-Liter 8-Cylinder (Econoline, F-150, F-250)
M - 5.4-Liter 8-Cylinder Natural Gas (Econoline, F-150, F-250)
P - 2.2-Liter 4-Cylinder Diesel (Ranger)
P - 5.0-Liter 8-Cylinder (Explorer/Mountaineer)
S - 2.8-Liter 6-Cylinder (Ranger)
S - 6.8-Liter 10-Cylinder (Econoline)
T - 2.9-Liter 6-Cylinder (Ranger)
U - 3.0-Liter 6-Cylinder (Ranger)
W - 4.6-Liter 8-Cylinder (F-150, F-250)
X - 4.0-Liter 6-Cylinder (Explorer, Ranger)
Z - 5.4-Liter 8-Cylinder (Econoline, F-150, F-250)
2 - 4.2-Liter 6-Cylinder (Econoline, F-150, F-250)
6 - 4.6-Liter 8-Cylinder (Econoline, F-150, F-250)
The 4.9l isnt listed but I think its a Y.