Title for car where engines are swapped

[alexiskai]

Originally Posted by Synchro909

So from the point of view of an outsider, it seems to me that the states are NOT united. Hmmmm.

There is no national law requiring cars to be titled. All 50 states independently started their own titling process at various times over the past 100 years. So every state originally had that more “streamlined” system you were inquiring about, but for some reason they all abandoned it.