There is an article in the Feb '18 issue of Car Craft. It shows Aldan coilovers being installed in an early Mustang. They list other Ford applications, but not Mav/Comet specifically. Looks like they should work for us too. One very appealing aspect is that a roller spring perch would not need to be part of the assembly. Takes a little sting out of the $800 price tag. Here is their website, but it seems pretty weak. Tried to search by vehicle and only got Buicks, even though they have pictures of all kinds of other cars. Probably best to call and speak with a human ... http://aldanamerican.com/
They will work. You can get a set of Viking Warrior coilovers double adjustable for $599 and they also eliminate the spring perches...