[strictlypersonl]

Chassis 575 is before we offered the outboard-braked rear suspension so he probably has the Jag rear (and brakes).
Years ago, there was someone who offered a Wilwood conversion (caliper and vented rotor) for the inboard Jag but it was complicated and expensive. About $1500 in the '80s or '90s. It was one of of the inspirations for us to build our own design with outboard brakes.