Ruthless rotors

Hey guys I'm currently in the process of putting a 12a bridge port into my girlfriends ke20 coupe for her. I'm making a complete bolt in crossmember and mount setup ill post pics up as its done and see what yous think and if there enough interest ill be making a few to sell . I would like measurements for a ke30 inside to inside of chassis rails about 250mm back from the front as I want to see what the difference is between the ke20 and ke30. I will make a spacer plate out of nolothene to make up the difference . Once finished they will come powder coated . Kit will include - 12a 13b breast plate . 2x new engine mounts. All bolts 8.8 grade. Custom crossmember predrilled . Nolothene spacer bush depending on width of chassis . These will suit most corollas . Any input and thoughs all welcome . Thanks