At the time Chrysler touted their 5 yr/50,000 warranty. But Hemi powered Plymouths and Dodges were covered by a 90 day warranty that was automatically voided if the car was used for racing, or modified in any way, effectively they were bought as is.
I guess they tried to work out the kinks, but failed and had to go through with the process and sell them, "as is".