Looking at this pretty subject begets a trivia question of which I have no immediate answer. The Petrolicious subject sports a 140 mph speedometer, yet all of the E9s of which I am familiar have either 240kph or 150mph gauges. Note that Road&Track also lists the standard US CS model, (the same as the Petrolicious version) as being equipped with the 150 mph version. Realoem ambiguously lists three separate gauges, one fits models from '68 through '75
6212180618. Another fits April '71 through '75
62121353958. Yet another fits February '72 through '75
62121353900. It is unclear whether the different numbers relate to gauge facia including metric or standard English demarcations, or different speed markings (140 v 150), or the "W" (matching) ring and pinion ratio.
Not that it matters much but what models were originally equipped with the 140 mph versions?
FWIW, my E3s were equipped with 140 mph gauges.
Petrolicious:
VW Beetle
Nice instrument cluster montage here:
http://www.e9coupe.com/forum/showpost.php?p=49784&postcount=15