Don't know about the driving part...
Attention to detail upon assembly never hurt..The Eldo. pkg. is a fairly balanced approach, but I am not a huge fan of their carbs. Hey Kylem 4711...Q-jet properly set up will give great mpg and run well enough to propel a car into the 10's...biggest two factors impacting fuel milage are rear-end gear ratio and judicous application of the right foot.