Is the C7 Corvette Grand Sport a Poor Mans Z06? by GMI News March 3, 2016March 3, 2016 Share Comments Thread It’s essentially an all natural Z06. Keeping the same old 6.2-litre LT1 and coupling it with MagRide, upgraded suspension, electronic LSD and bigger brakes. Opt for the Z07 package and you’ll gain carbon-ceramic rotors and even clingier Michelin Pilot Sport Cup 2 tires which ups cornering grip from 1.05g to 1.2g. Corvette Grand Sport coupes and convertibles go on sale this summer in the U.S. and in Europe by the fall.