1.why the hell did it cost him $30 grand to get 10's?on a straight axle car?ANSWER:he doesnt know what he's doing.and someone else is doing the work for him 2.the pushrods domestics have a SOHC and 2 valves per cylinder.ours has 4 valves per cylinder.know what that means?it will breathe better on top end.the 2 valve pushrod engine will run out of steam sooner than a DOHC.it also has better oiling capabilities...which come in handy when you want to ... 3. drive triple digit speeds in a Z.thats EXACTLY what this car is made for.i average at least 2 road trips a month.ive made it from Knoxville,Tn to Gainsville Fla in 5.5 hours...(do the math) thats including stopping for fuel.