The FTI Level 5 TH400 transmission is a TH400 unit rated to 2000HP, supplied in a reverse-pattern configuration with a GM Ultrabell bellhousing as stated in the listing. This Level 5 transmission is presented as a high-capacity TH400 option for builds requiring a 2000HP-rated, reverse-pattern unit with GM Ultrabell compatibility per the product description.
FTI TH400 Transmission - Level 5 - 2000HP Rated - Reverse Pattern - GM Ultrabell