if you have an LC-1, there is a way to wire it so it works as both the standard O2 sensor and a wideband. i didn't do it, but it's in the directions somewhere.
i usually get shipped extra parts. i've gotten camber caster plates and springs for the mustang that i didn't order, and just 2 days ago i got 2 hi performance air filters for my V-Rod when i only ordered one. i was not charged for any of the extra items.
the Cobra version is made of a better material. it looks nicer than the burlap sack look of the regular top. i plan on replacing mine with the Cobra top at some point.
don't forget that the Camaro is also pushing a more weight. power numbers alone don't make for a better car. GM thought more power = better car last time around, and where did that get them?
A.) if you are going stroker, you probably are going to use forged parts.
B.) the block itself, can handle 1000rwhp.
C.) the 620rwhp isn't going to happen unless he has a full exhaust and ported heads, and maybe some cams.
you are a few years behind the times. Ford is #1 in quality and safety right now.
as for foreign cars being built here, you have too look at the part content of the vehicle, then take a look at where the profit is going. there is more to it than just where the car is assembled.
with my S trim, if i give it a moderate amount of throttle, it will have 0 vacuum/boost. light throttle will have vacuum. heavy throttle will get about 4psi boost. full throttle 10psi.
dream?
realistically...
BBK SSi intake if it ever comes out.
upgrade Vortech blower
electric water pump
trickflow heads
MPH Supercharger cams.
and various supporting mods.
this "should" yield a solid torque curve that doesn't sacrifice low end torque for top end power.