In reality, its Worthless.
I've had 2 running and driving slant vehicles recently. I tried for months to sell them as complete engines/drive trains. I advertised them as they were running and driving and could verify before sale. I ended up pulling my dart engine and kept the slant for a month or so before selling it for scrap to get it out of my way. My D100 had a slant with a 727. I offered it for a few months, pulled it and offered it for $200. Ended up giving it to my cousin for free and he hasn't had any luck selling it in nearly two years. It's a complete running slant, good 727 trans, drive shaft, exhaust, wiring, ignition, etc.
People might want them, but they won't pay for them.