there are tons of 6 speed cars in the 8's with AC/ps andchrome everything. Yes we have one log exhuast mani they have like 20 diff kinds for inter external, compound seqential yada yada. They have any turbo you want. clock it put it on pros of an external vs internal, they use t3, t4, t6 flanges while we only have a t25. They have justin nenni to tune. Its really like comparing apples to oranges with those cars. They have 10x the amount of shops coming up with new parts for those things everyday. We haven't even had one z break the 1000hp mark all boost.
Don't get me wrong I love the z and always will but you will never be able to compare the two.