I have owned a 70 Challenger with a slant. IIRC it was a "Deputy" model with fixed quarter windows. It was too rusty to save (at that time). Have also owned a 71 Charger with the slant. My wife called it "The Beast" because it was slow slow off the line but cruised quite nicely at 70. Myst have had 2.76 gears in it!.