I am not totally sure what you're asking.Good job on the 60 ft, though 2.1 sec is not bad for FWD..
Would drag radials be the ONLY way id be ranging that?
How much do you think the Indy 500s would help? I'm thinking NOT as good as yours but maybe range in the 2.28-2.35 sec? currently my best is EDIT 2.42 sec.
Street tires won't give you representative times, it's hard enough with drag radials.
What are you trying to accomplish?