my xcal tune? no, it will be dyno tuned with the xcal.

 

don't even know what is. that zex package sounds like a good deal. and yes a blowdown tube is required at any track when the driver shares the compartment w/ the botle. if it's in a trunk your good to go w/ out it.

i used a zex kit on my '90 'vert and liked it....easiest to install.

i don't see why you couldn't use that xcal...but like i said, i don't even know what it is....
but dyno tuning your car w/ basically just nitrous isn't gonna benefit you at all really.

unless they are hooking you up, and gonna do a little air/fuel while it gets dyno'd......otherwise, i'd keep it stock.

could run too phat NA and thats where your running 99.99999% of the time