QUOTE
I discovered this year agos
As you may tell, I don't have the mod anymore.
The problem is that Ultima Mod's orcab.vxl looks much more different from Westwood's and its called "Javelin Bomber" on the Name key. The new art is in the mod's very own expand02.mix in the SUN folder.
It would be like the diagram below if you have the mod.
All the original mixes.
tibsun.mix--->local.mix
local.mix-->orcab.vxl AND orcab.hva
Download the mod, take the two mixes. ecache02.mix, and expand02.mix
expand02 has all the voxels, and hvas.
SUN folder--->expand02.mix
expand02.mix--->orcab.vxl AND orcab.hva. <----New graphics.
The main problem is that Javelin Bomber uses new graphics, but when you try to code it, it can't read the original graphics because expand02.mix is there. I don't explain things too well. You might be able to find Ultima Mod 2.5 at filefront still so check there if you want to test it.