1955-57 HRD Chevy Enlarged Transmission Tunnel 
 
Custom New Steel 16-Gauge Tunnel
Comes Fully Formed, Welded And Ready To Install
Enlarged Nearly 2" To Allow Easy Installation Of GM 6L80, 6L90 And Tremec T-56 Transmissions
Designed For Use With Our Recessed Firewalls RFW-56 Or RFW-57
Requires Cutting, Welding And Fabrication Skills To Install