*shrugs* if you have the money I don't see whats wrong ith doing it... Expect to pay upwards of 10G just to get the motor in their... not to mention gearbox, custom tailshaft, wiring up the electrics etc...
It's sure be different. You wouldn't be thinking about re-sale value. If done right it'd be unique and quick! and the. THis months auto salon magazine has an e36 with a 2jz in it.