A question to the expert modders of SEIV

[The Canuck]

i was thinking of making a WW2 mod for SEIV. but to make it work i would have to almost completely rework most of the rules in the game. what i need to know is if it is possible to make a new class of ship. ill give ya i bit of my idea. tanks would be regular ships and fighters and bombers would be a new type of ship, not a unit but not "ships" as the game has it. this is so i dont have to have tanks and planes be regular SEIV ships so that tanks wont have bombbays and bombers having tank turrets. there are also alot of other changes i want to make but this is an essential one, so is it possible and if so would any body want to help me with the mod?