This issue was before communicate.
First the SMI Motivator and the Budweiser Rocket are two different cars - the SMI was bended by run and was sold to Nina Rindt the widow of the postum formula 1 World Champion from 1970 Jochen Rindt.
Also the Budweiser had different rocket units.
At last there was three Budweiser - the Bonneville version which was bend when the car left the course due to very bad salt condition. This car stand today, modified to the Edwards version in Talladega/Alabama - means they add the sidewinder in the rear and changed the parachute tubes, but you can't see the tubes due to this that they are covered with a aero foil which was not used.
The Edwards version was in the Smithsonian and was moved to sheet in Indiana, when the Smithsonian found out that he didn't broke the soundbarrier.
The third car is a advertisment mock up which looks nearly the same as the Edwards version, only one different, on the front is a big single panel, where by the real car was two panels.
This advertisment car is by Richard Childress, the owner of the race team where the late Dale Earnhardt was driver.