i have a blitz lm jza70 kit.the core is a 23 1/2 x 10 1/2 x 4.the piping is nice and thick,but route's the same as your stock jza70 piping.this causes a problem if you want to run a fat radiator with e-fan's(not sure about hydro though).no need to relocate the battery with it and can use stock airbox(if that matter's)never took and pic's of it though.you can see how it fit's in a gracier bumper here.
hiding behind the stock bumper
hiding behind the stock bumper