I'm not sure this belongs in the 'Collectables' forum, but ...
In 1985 Brabham raced the ‘conventional’ BT54. The drivers were Piquet, Hesnault and Surer (Hesnault until Monaco, Surer fron Canada onward). The ‘lowline’ BT55 was raced only during 1986. The team started the season with Patrese and de Angelis. Following Elio’s death Brabham ran a single car for Patrese in Belgium. Derek Warwick then joined the team for the rest of the season. For 1987, following Gordon Murray’s departure, Brabham produced the more conventional BT56, although this (of necessity) still used the ‘lay-down’ BMW engine developed for the BT55.
After Piquet decided to move to Williams for 1986 Bernie did try very hard to get Lauda, who was apparently very taken with the 'lowline' concept, but eventually decided to stick with retirement.
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