Looks pretty
What's its poly count? If you plan to use it for SH5, you'll need internal damage model as well for points where hull is going to break.
Actually importing into SH5 in its native GR2 format is not that hard, only major limitation being that you cannot add/remove meshes, only replace them - so new model must have exactly the same amount of parts as stock model chosen for "template". For Liberty it won't be a problem though for you can simply use stock Liberty as template.