THE INFORMATION IS NOT VALID. DISREGARD RODNEY DIEHL 7/15/20
Stock GEM brakes are marginal at best.
If you have GOOD wheel cylinders and DRY brake shoes you can increase the stopping power by replacing your Master cylinder with a:
Dodge Master cylinder from an 82 charger
From Ebay About $27
You will also need (2) 3/8 24 X 10-1 MM adaptor fittings BrakeQuip #BQ50
From Brake Connect Clarksville Tn 37040 About $12
This cylinder has a smaller bore thus giving a 30% increase in brake pressure with the same pedal effort.
About an hours work.