Steve, (a) I have the PSOM speedometer already, (b) I am aware of the inherent inaccuracies (c) I actually have a couple of Garmin Nuvis, and would much rather use one of them then try to read a phone screen for speed. The Garmin weighted mount sits nicely in the center "well" on my 1996 dash.
Bill AKA "LOBO"
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"Getting old is inevitable, growing up is optional"
Darth Vader 1986 F350 460 converted to MAF/SEFI, E4OD 12X3 1/2 rear brakes, traction loc 3:55 gear, 160 amp 3G alternator
Wife's 2011 Flex Limited
Daily Driver 2009 Flex Limited with factory tow package
Project car 1986 Chrysler LeBaron convertible 2.2L Turbo II, modified A413