right im doin a turbo conversion on my xr3i, i bought a frst engine thats got nothing on it but the CPS from my xr3i it like 20mm to long!

ive tryed to take the metal part that holds it off the xr bottom end but it ment removing the clutch and flywheel so didnt in the end

anyone else come across that problem??? will a universal sensor work??? or can i just space my sensor out?