Good afternoon everyone
On my 1980 Gran Fury police car, it has the single key system (one key for ign, doors, trunk). The original key is pretty thin and I always wa t to have spares. So far I am having terrible luck on getting keys made. The Pentastar headed key goes to far into the lock and takes some trickery to work. Every round head key I find has the wrong grooves.

The pictures attached is the original key and any help is greatly appreciated