I believe its actually a katech intake, they build the c5r ones as well as other stuff, heres a thread from ls1tech about ir setups, lots of good reading, hopefully i can squeeze one into the budget for my next motor
There are plenty others out there I've seen over the years as well, but with the tall velocity stacks, none of them will fit under the hood of a musclecar.
I've attached a pic of Rick Kirkindals setup, (His screename is lil427z on the board) you may want to pm him for more info. Just be careful, he'll talk your leg off!
Large objects are rare, but what will ruin the cylinderliners and rings are fine dust. It will work like the grinding stones your machineshop use to hone your engine.
It will wear out the block in no time depending the environment where you live.