Found this, it explains the model codes.
EXAMPLE:
B (1)
E (2)
5 (3)
A (4)
4 (5)
8 (6)
D (7)
(1) vehicle classification
B: Series legacy
(2) Body Classification
E: 4-door sedan
H: Touring Wagon
(3) Division emissions driving suspension
5:2.0 liter 4WD
9:2.5 liter 4WD
C: 2.5 l EASASU 4WD
E: 3.0 liters 4WD
S: 2.0 l HAIPAWATABO 4WD
(4) division, Kai
A B C D Model Variant
(5) Division few doors
4:4 door
5:5 doors (body segment D, G)
(6) Division Grade
3: TX
4: TX-S, TX-G
5: Brighton
6: S
7: RS
8: RSK (A ~ D-*)
9: GT-VDC, GT (D-*)
A: 250T, 250T-V (C-), 250S (D-)
B: LANCASTER
C: GT-B, GT-B E-tune (C-), E-tuneII (D-*)
D: LANCASTER-ADA (B ~ C-), E-tuneII (D-**)
GT-B Limited, GT-B LimitedII,
GT-B S-edition
E: 250T-B (A ~ C-), GT (D-**)
F: Brighton-S, Brighton (D-), B-SPORT
G: TS TypeR
H: LANCASTER-S
J: RS TypeB
K: LANCASTER6 (C ~ D-*)
L: LANCASTER6-ADA (D-*)
M: RS25
N: GT-Limited
P: RS30
Q: GT30
R: RSK (D-**)= RSK Limited II , RSK S-edition
S: LANCASTER6 (D-**)
T: LANCASTER6-ADA (D-**)
U: S401 STi
*: - 2001/12, **: 2002/01+ (?)
(7) transmission and fuel supply division
D: 5MT (SENTADEFU) DOHC, EGI Turbo
E: E-4AT DOHC, NA
F: 5MT (SENTADEFU) DOHC, EGI
H: 6MT (SENTADEFU) DOHC, EGI Turbo
J: 5MT (SENTADEFU) SOHC, MPI
P: E-4AT (active) DOHC, EGI Turbo
R: E-4AT (active) SOHC, EGI
S: SS-4AT DOHC, EGI
T: SS-4AT (VDT with) DOHC Turbo
So my code BE5D4RD reads: B: Series legacy, 4-door sedan, 2.0 liter 4WD, D model variant, 4 door, RSK Limited II, 5MT (SENTADEFU) DOHC, EGI Turbo i think!!