I JUST GOT A GOOD DEAL ON SOME 1.7 ROLLER ROCKER ...WILL THEY WORK ON MY 1987 MUSTANG 5.0 EVERYTHING ON THE MOTOR IS STOCK ...SHOULD THEY FIT UNDER VALVE COVERS THEY ARE THE STOCK ALUMINUM ONES..DO I NEED ANYTHING ELSE? IS THIS A GOOD UPGRADE FOR MY CAR.?
