[jshel1]

There are two different Quicktime Bellhousings that fit the Ford 351W SB and the Tremec family of transmissions. The cobra recommended bell housing does not require modification other than indexing... ie it was fabricated by Quicktime not having the lower lip or flange that cobra ground clearance can't tolerate.

I understand the 2lb weight difference between the two offered windsor bellhousings is the flange. Very strong, very light weight.