Reaction time DOES NOT affect your times at all, 60ft or otherwise, so improving your reaction time won't affect anything after that. The only time 60ft times come into play is when you're actually racing, you can beat someone with a faster time by treeing them at the light. You cross the line first, but their times were better.
Best way to lower 60ft times? Practice Practice Practice first, your 60 fts are kind of slow, try getting down to 2.2 or better on street tires. After that, 4.10 gears and drag radials will help a lot.
Best lower control arms for me have been the Megabite SRs. Traction even with crappy Sumitomos was greatly improved. Upper control arms are debatable, concentrate on build quality, and if you get double adjustables and have your pinion angle set at -3 to -4 degrees, and let it rip.
If they are just track tires, on spare rims, get the M/T drag radials, tons better than the Nittos. BFGs are also better than Nittos, but the M/Ts are definately a world above both.
2001 Dark Highland Green Bullitt [email protected] naturally aspirated on a bone stock 2V longblock
Under Reconstruction for RS275 Drag Radial Class Pushrods and Powerglide Coming Soon If it weren't for physics and law enforcement, I'd be unstoppable.