This setup will fit inside your stock 14" drum rims and will not push the wheels out.   We use your existing front drum spindles to convert to disc brakes - you do not need to even remove it from the car.  No machining is necessary, the hardest task here is installing the adjustable proportioning valve (not supplied) if desired. 

These will also clear the 13" Dayton style wire wheels. 

This combination uses 1978 Malibu rotors, along with 1990 Celebrity HD (2-1/2" diameter piston) calipers and pads.  We now offer new 2-3/4" diameter Celebrity calipers that will better match your Chevy's hydraulic system, they are found here.

We include:

CNC laser cut and fixture welded brackets

Bearing spacers

Hydraulic hose clips, Banjo bolts, cotter pins and hardware shown