You probably shouldn't go much beyond .500 lift without changing out the pistons. Whether or not the engine is stroked has nothing to do with whether you can install a high lift cam. The concern would be striking the pistons at the top of the stroke. Stock 302 pistons are pretty much flat tops. To run a high lift cam would requrie fly cut pistons that have reliefs to clear the open valves.
I couldn't repair your brakes, so I made your horn louder.