This transmission adapter fits the 727 Chrysler trans to an early Chrysler 51 to 53 extended bell housing engine. It requires extensive modification to the trans case. The bell must be removed. There is a 14 page instruction manual included the will guide you through the steps required to make this work. The hardware bag is sealed and never opened. It is new and never used. This was sold by Hot Heads and made by Wilcap. Wilcap lists these for $1350. Hot Heads price was $1026. GONE