I pondered this for a while thinking coil springs, you mean the funky black box covering the ignition coils ?
https://www.delorean.eu/catalog/product ... s_id=70031 - Shiny but how much .
https://www.deloreango.com/uk/coil-cover.html - not shiny but still how much .
Welcome to the world of the silly little things which cost the earth, and the things which most people wouldn't need a spare.
Check Tompeters listings (apologies if I spelt that wrong) there is a chap in the US breaking a fair few Deloreans and selling loads of spares. I suspect shipping would be a pig but you may be able to negotiate a discount if you need a few bits.