BF7 INVITED BUILDER, jeff Leighton, TRIUMPH PRE UNIT, Uncategorized, wretched hive BF7 Invited Builder : Jeff Leighton Update Posted on March 15, 2015 by Walter Jeff has been hard at work building this killer Triumph Pre Unit. He’s built a crazy narrowed, rigid, pre unit front end & check out those wheel spacer hubcaps! Jeff’s video was shot and will be ready soon.