A very unique 510 double "A" arm customized suspension by Michael Spreadbury.  To see extensive coverage of his project go to:  
http://dimequarterly.tierranet.com/   
pictures/spreadbury.html  

Michael's description of the setup follows:  

"I upgraded my stock 8" solid rotors to ventilated, cross-drilled 11" units from a Mazda RX-7 Turbo II.      

The caliper is an all aluminum, four-piston design which has been powder coated red.   

The hubs are also aluminum and ride on a Mazda RX-7 spindle which has been modified to accept a Toyota Supra Turbo upper forged aluminum a-arm.   

This double a-arm suspension is a unique modification to a 510."

Double A Arm, 5 Lug Rotor and Brake Conversion