If you want to see a marvel of automotive engineering just take a look at a modern dragster setup for bracket racing.
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They even give you hand clearance around the headers for those quick in between round spark plug changes.

I love working on my race car now, setting the valves is as easy as rolling up a office chair and using the header as a foot rest. The distributor cap makes a handy spot to sit your beer down when you start breaking a sweat setting the lash.

Strip
racing is a totally different thing. most things racing are designed/engineered by people that've "been there done that".
when i started working at the shop that i now own, this.....

was but a mere shell. alex built the engine, bought the transmission(turbo 400) from another racer(who was converting to a 2 speed), and then i went to work.
there was nothing in this car. no electrics, no fuel or brake systems, no mounts.....nothing. i made them all. i designed the mounts, i set the angle of the engine/transmission, i set the pinion angle. i basically took this car from a shell to a car easily capable of running 9's at just over 130 mph. something that an automotive engineer would've had to study. he'd study it, design somethign, study some more, re-design his design...and this would go on for a year or 5.
it took me one winter of staying late at the shop from shell to firing her up, and backing her out of the bay on her own power. she's done a few seasons worth of passes with never a single problem.
well.....one problem....i broke a wheelie bar one night,.....the weld broke. that was a little scary.
