I have a second hand hardtop and it has Izzy race brackets. Is it possible to install it with the race brackets without removing the soft top with some modifications or will the bracket be too short? If not will the forbbiden bracket or izzy street bracket match the hole pattern from the izzy race or will I have to fill the holes before re-drilling?

 

The izzy street brackets will fit. That is what they are for- the race is for no softtop and the street version is for people with softtops. The part that actually bolts to the hardtop are the same between the two brackets, the only difference is how they mount to the car.