What are all of the different codes (BU, BT, etc) and what other 67-69 camaros/novas will swap?

Look here for ID locations:
http://www.camaros.org/numbers.shtml#RearAxleNumbers


1967 axle
PA - 3.08
PB - 3.36
PC - 3.31
PD - 3.08 posi
PE - 3.08 posi
PF - 3.31 posi
PG - 3.36 posi
PH - 3.55
PI - 3.55
PJ - 3.73
PK - 3.55
PL - 3.55 PM - 3.07
PO - 3.07 posi
PP - 3.55
PQ - 3.55
PR - 3.31 posi
PS - 3.55 posi
PT - 3.73
PU - 3.73 posi
PV- 3.07

1968 axle
PA - 3.08
PB - 3.36
PC - 3.31
PD - 3.08 posi
PE - 3.08 posi
PF - 3.31 posi
PG - 3.36 posi
PH - 3.55
PI - 3.55
PJ - 3.73
PK - 3.55 PL - 3.55
PM - 3.07
PO - 3.07 posi
PP - 3.55
PQ - 3.55
PR - 3.31 posi
PS - 3.55 posi
PT - 3.73
PU - 3.73 posi
PV - 3.07

1969 axle
BA - 2.56
BB - 2.56 posi
BC - 3.36
BD - 3.36 posi
BE - COPO ZL1 HD 4.10
BI - 2.73
BL - 3.07
BM - 3.31
BN - 3.55
BO - 3.73
BP - 2.73
BQ - 2.73 posi
BR - 3.07 posi
BS - 3.3l posi
BT - 3.55 posi
BU - 3.73 posi
BV - 4.10 posi
BW - 4.56 posi
BX - 4.88 posi
DT - COPO 9560/9561 HD 4.56
PA - 3.08
PB - 2.56
PC - 2.56 posi
PE - 3.08 posi
PX - 2.73 posi
PZ - 2.56 posi
QN - 4.88 posi, 4-wheel
QS - 2.56 posi, 4-wheel discs
QV - 3.07 posi, 4-wheel
QW - 3.3lposi, 4-wheel discs
QX - 3.73 posi, 4-wheel
QY - 4.10 posi, 4-wheel
QZ - 4.56 posi, 4-wheel discs

1st gen Camaros will swap with Novas, Omegas, Apollo's up to '73.
2nd gen Camaro rears are slight wider. Others should have some more input.