Its not possible and very rare,they just got lucky and someone else had already bought the bikes and pulled the motors before the company went under. The guys that make the t rex sell off all the frames and body parts after they strip the motors because suzuki won't sell the motors separately and makes them buy the whole bike.
I wonder if the bike sales were w/o titles preventing them from reselling them and causing them to sell them as parts only. Honda did something like that with their 81 CBXs but instead of selling them they donated them to various schools. Years later some of those surfaced and some of their new owners found ways to title them.