Diamond plate is a good idea for the top, but aluminum is a little difficult to weld to a steel channel.[/ url]
You could drill and tap the steel channel iron and countersink SS flathead screws to attach the aluminum diamond plate.
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum