Weight makes a massive difference but remember that in some classes, as with SRWD, we have minimum weights to meet. Shane and I don't have that problem because we drive tanks that only have to go 3250lbs (3100 + 150 penalty for non-OEM box) which they seem to do easy enough.
I'll just be happy to be back out there racing again and hopefully a little closer to the pointy end of the qualifying order than my normal 4th - 8th position.