Rich My 4 speed K has a factory console tach. Not sure if that was standard on the car but am guessing it was. I'm not aware of a 150 speed on any '64' s, K or otherwise but I was told many years ago that the New Jersey State Police had '64 Chrysler pursuit vehicles on the NJ Turnpike. Maybe those would have had calibrated 150 speedos? I put a 300J 150 speedometer in my K since I've always felt they should have come with that in the first place. ☺ Keith Sent from my LG Phoenix 3, an AT&T 4G LTE smartphone ------ Original message------From: 'Rich Barber' c300@xxxxxxx [Chrysler300]Date: Sun, Dec 3, 2017 9:25 PMTo: 'Matt Allyn';'Chrysler300';Cc: Subject:[Chrysler300] 1963-1964 300J-K - 150mph Speedo Historical/technical questions for the J-K crowd: Did all 300-J’s have the 150 mph speedometers and tachometers?Were the 150 mph speedometers and/or the tachometers an option on any other 1963 Chryslers? Maybe special order?Did any of the 300-K’s or any other 1964 Chrysler (including police cars) have standard or optional 150-mph speedometers and/or tachometers? Seems I had heard or read that all 30-K’s with four-speeds had tach’s instead of vacuum/performance gauges.Did any 1963 or 1964 Chrysler with a 150-mph speedometer have a different speedometer pinion gear—or were all calibrated to the standard 1,000 RPM @ 60 mph?I do recall that the 1963 300 Sport Pace Cars had compasses mounted in the consoles. Was that option offered on any other ’63 or ’64 and did those work OK? FUN-WITH-NUMBERSI just ran some calc’s for 8.50 x 14 tires (28.10” OD); no tire-to-road slippage or wiggle-woggle, 3.23 differential ratio; 150 MPH requires 5,797 RPM at the tail shaft. 140 MPH= 5,411 RPM. Possible for a J or K? C300K’ly,Rich BarberBrentwood, CA From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Matt Allyn allynentertainment@xxxxxxxxx [Chrysler300] Sent: Sunday, December 03, 2017 3:27 PM To: Chrysler300 > Subject: [Chrysler300] 1962 300H - 150mph Speedo Anyone have a 150mph speedometer for sale for my 1962 300H?I have all other Astradome parts & pieces; but only have a 120mph speedo. Thanks!Matt Allyn