will upgrading from stock 22" radiator to stock 26" make any difference????????????

Drove the car yesterday and it was 99*. Sat at the drive thru for about 5 minutes and the temps hit 210* and I never could get it under 205* the whole 10 mile trip to where I was going. I can tell the car does not like these temps. When it gets this warm the idle changes a little and my oil pressure drops. Up to 200* at 2800 rpm the car has 55lbs. of oil pressure and when it goes over that it will drop to 45lbs.