Chrome Adapters are Reduced to 5" OD (except the ADP8D) and come in diameters of 6", 7", and 8 inches, with lengths of 7.25", 8.75", and 12.8 inches, respectively. The ADP8D reduces to 5" ID (expanded). Manufactured by Lincoln Chrome and all chrome adapters are "Made in USA".
Note: ID - inside diameter, OD - outside diameter
Joe Kleyn JENISON, MICHIGAN
Here's a few pictures of that exhaust installed.