To add further to Ken's notes, the Matador is listed, in the
"Standard Catalog of American Cars - 1946-1975, as being available
with the "Go-Machine" package in '71. It also stated that this
package was available only on hardtops and consisted of:
360 or 401 with four bbl. carb, dual exhausts, handling package,
power disc brakes, E60-15 Polyglass tires with raised white letters,
15 x 7" styled steel wheels and Space-Saver spare tire.
The 360 package cost $373 and the 401 version cost $461.10.
No mention is made of decals. Another interesting item is that the
401 came only with duals whether or not it was part of the Machine
group. Matadors were not available with bucket seats and had the
individual reclining seats. They could be had with a console and
floor-mounted three speed tranny. A four-speed tranny could be
ordered only with the 401 Go-Machine package.
I hope this is of some help.
John
See page 108 of 'Amazing AMC Muscle' or 104 of Mitchell's AMC Muscle Cars for
more info.