spools420a

This is on a redtop sr20det 240sx s13.I
got a megan 3 row radiator to help keep the temps lower.the radiator didn't come with gromments or any mounting brackets so I figuered I'd use the ones from the OEM radiator.once installed the clearance seems pretty off as the radiator sits so high the OEM top mounting brackets don't even touch the chassis.now I was considering cutting the bottom rubber mounting gromments down to bring the radiator down a bit then I thought maybe I'm not supposed to reuse the bottom mounting gromments?I'm worried though if I remove the bottom grommets the radiator will rub and over time create a leak.so should I remove completely or just cut them down?are these radiators not supposed turn reuse the OEM gromments?