These are the ones I saw. Maybe they can give you some technical info. Looks like they are located in Minnesota.
.mcbayperformance.com/2WD_PICKUP_FRONT_COIL_SPRING_SPACER_LIFT_KIT_p/1700t_series.htm I would be curious what you find out.

Mark

1956 Mercury M100
1955 Ford Fairlane Club Sedan
Delta, British Columbia

its real low...i could not get the arms from my lift out from under it. i had to put wood blocks under the tires. then it only had about a inch of travel to the bump stops. these roads in the lovely state of ny would jar me out of the car. i would like to use them to keep the variable rate, who sells the spacers? thanks a lot, john

1955 mainline 2-door p-code 292 4v 3 speed od. former virginia state sergent police car. all black

You can get spacers for Aerostar springs that go under the spring and raise them 1,2 or 3 inches. May seem goofy though, to put in a lower spring and then raise it. I have the Granada spindle with the stock springs and am curious how low the car is with Aeorstar springs. People rave about the ride they get with these springs.

Mark

1956 Mercury M100
1955 Ford Fairlane Club Sedan
Delta, British Columbia

got a new set of moog aerostar springs, but with the granada spindles it is to low for my taste. make me a offer, john

1955 mainline 2-door p-code 292 4v 3 speed od. former virginia state sergent police car. all black