Although four-wheel disc brakes are nice to have, they're not always practical for tight budgets. At the least, you want power front disc brakes and a dual braking system for optimum safety. Opt for the heavier '70-up spindle, which is more durable than we normally see for '65-'69. If you go with the heavier spindle, you will need the appropriate outer tie-rod ends from Mustangs Plus. Street slang for this piece is the "Granada spindle."