[LMH]

Regular production 5 bolt blocks ran out during assembly of approximately the last 60 Cobras. As John stated, the 15 automatic transmission cars all received 6 bolt blocks with their C4 transmissions. The current research indicates that Ford assembled about forty-eight 5 bolt non-production engines for Cobras with four speed transmissions after regular production had ceased. Not all were used in Cobras.
Larry