PHIL, A WELL SET-UP SRX WILL GIVE YA FITS ON A TOP END PULL. FROM WHAT I SEEN, RX-1 IS NOT A LONG LEGED TOP END RUNNER LIKE THE SRX. I BELIEVE THE SKID IN THE RX-1 SCUFFS SOME MPH OFF. I REMEMBER WHEN THE RX-1 CAME OUT, AFEW I KNOW BOUGHT HEAVY HITTER CLUTCH KITS, FILTER KITS, etc, I STILL RAN RIGHT BY THEM WITH MY 2002 SRX IN A 1 MILE RUN. I TOO STILL RACE A VMAX 4 800, AND ON THE GRASS TO BOOT AND I HAVE BEAT MANY SRX,s. ALTHOUGH I THINK MY 2000 SRX MAY RUN WITH MY VMAX 4 NOW. 3:16 (yammie tony)