booster addition to manual brakes

As to answer the the OP original question, if the brakes you have now function 100% as the factory intended, and you feel unsafe, then I would convert to disk front brakes, keep in mind it my be expensive since you are over seas, also consider that your front rims will not work if stock. Dr Diff used to have a reasonable conversion kit.

As AJ stated factory 4 wheel disks on vette from the 70's are awesome, I have a C3 vette and I swear it handles better and stops as good as my new challenger.