Off Road Package
In 99 the 3.73 gear came with the 5.4 ORP
if you had a 4.6 they came with 3.55
I think in 2000 the only way to get the 3.73 was with the 7700
option
and the LS (or posi) was an option
if you had a 4.6 they came with 3.55
I think in 2000 the only way to get the 3.73 was with the 7700
option
and the LS (or posi) was an option


