Preheat grill on high heat for 15 minutes. Season steak on all sides with salt and pepper.
Grill the steak on high, about 8 minutes per side. Let rest about 20 minutes before slicing, thinly,on the bias.
Assemble on the bread as follows: Spread each slice of bread with 1/2 the mayo, then top the bottm slice with steak, Cheese, salt, pepper, EVOO, pepper sauce, basil, & tomatoes and garlic. Top with the other slice of bread.
Reduce grill to medium heat and cook sandwich for 2 mintues on each side, until cheese is melted.