306 Xsi Ratios And Cwp Please

[brianthemagical 1]

as above, i've done a search but can't find anything. i bought the box of ebay so i'm not sure exactly what it is but it has 6GN2 on the diff and i think it was made in 98. one half of the box is be3 and has 1FZ on it and the other half has be4. i was told it was from a 306 xsi. thanks for the help.