there were a few threads here
or it may be in or moved the Resto-Mod & Pro-Touring forum section
about the Silver State 50 & 100 races, or races like them
what to do & what some have done
cooling system running at hi RPM
especially for extended periods of time is critical
trans & gearing to suit what you want & speeds/rpm you want at WOT
wider wheels & sticky tires
shocks are a big deal, so are anti-sway bars
suspension changes & lowering/stance
(good aftermarket parts or modified org. parts)
low center of gravity, less mass
less weight where ever possible (especially up high)
tying the chassis together/subframe connectors
spoiler outback & splitter/spoiler upfront
keep air from going under the car
channeling all the frontal air into the radiator
making the moldings & everything as slick as possible
lighten the car as much as possible (HP to weight ratios)
stiffen the car as much as possible
adding a cage & all the other safety equipment
the better you can make the car cut thru the air, the better
cool air going thru the radiator & induction
the less HP it will use to go specific speed
better have a bulletproof bottom end (short block)
still cool it efficiently getting rid of underhood heat
& still, be able to keep it down on the ground/stuck
& balls the size of an elephant
to go into turns open roads @150mph+
good luck