Fair price for coil overs to suit mk2 escort. '75

Hey guys, under a dusty tarp in the shed lays dorment the old girl which hasn't been a priority for a few years but a recent ride in a mates Torana has lit the flame for me to do something about it.
I originally was keeping with standard 2L struts king springs, Volvo 4 pots with elongated holes/ spacer to fit the disk. This is fine for track use however I'd like to keep things 100% legal.
Rear diff is holiday LSD I want to match the stud pattern

What is a fair price to pay for coil overs ?
What Is a good clean mk2 shell worth these days?
Is the big brake kit on eBay legal and what are people's thoughts?
Is anyone Interested in my brakes?

Sorry if this is in the wrong spot admin
Thanks guys!
offerings to the god of speed