Wrecked car that I still owe with liability insurance?

I wrecked my car which I still owed about 14k. I only had liability insurance so they won't pay for it. I wasn t told that I need full coverage on a financed car, I've driven like that for more than a year. Now I don't want to pay for wrecked car so I got a brand new car with Honda being the bank financing it. How will my credit be if I let them repo car but at the same time make payments with a good bank? Also can I sell the engine on the wrecked car or will I legally get in trouble?

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