Weste

Does anyone know if you can use xr4i calipers on cosworth hub and disc setup? Am converting a p100 to 4stud and think i have cosworth hubs as i have 260mm discs and xr4i calipers but height of the discs when laid flat is 58mm and sitting to close to the carriers, height of disc needs to be around 35mm in height which i believe is cosworth discs but know that there 280mm. I dont have the money to get discs to find out there useless! Please help