Which wheels are available for S-Bodies?

These ones!

Fighter Drift - New
http://i1005.photobucket.com/albums/...18x95white.jpg
18x8.5 - ET30
18x9 - ET25
18x9.5 - ET30 ET35 ET12
18x10 - ET20
5x114

Grid Drift
http://i1005.photobucket.com/albums/...lack_18x95.jpg
Available in the following fitments:
16x8 18x8.5, 18x9.5, 18x10
4x114, 5x114
et10, et20, et30, et35

SVN Drift
http://i1005.photobucket.com/albums/...ttGrey18x9.jpg
Available in the following fitments:
18x9 et30
18x10 et30

Boost Drift
http://i1005.photobucket.com/albums/...FT_WHTE_18.jpg
Available in the following fitments:
18x9" et30 5x114 only

GTR
http://i1005.photobucket.com/albums/...ronze18x95.jpg
Available in the following fitments:
17x9, 17x9.5 18x8, 18x8.5, 18x9.5
5x100 (18x8 only), 4x114, 5x114
et12, 20, 25, 30, 35, 40

Torque Drift
http://i1005.photobucket.com/albums/...rift_c_web.jpg
Available in the following fitments:
17x8 (Torque), 17x9, 17x9.5, 18x8.5, 18x9.5
4x114, 5x114
Et12, Et30, Et35

Force Drift
http://i1005.photobucket.com/albums/...redlip18x9.jpg
Available in the following fitments:
18x8.5, 18x9
et30, et48

RB
http://i1005.photobucket.com/albums/...reyLip13x8.jpg
Available in the following fitments:
15x7, 15x8, 16x8
4x100, 4x114.3
et4, et25, et35

would it be possible to come up with some sort of matrix of what sizes, offsets and finishes are available for each wheel? it gets confusing when they're just listed as not every combo is available/possible?

This shouldn't be a problem :)

What sort of format would suit you best for this?

a simple matrix would be good doesn't have to be an all singing all dancing interactive jobbie, on the Work website they have it for each wheel design, lets you see what widths, offsets and finishes are available for each pcd