I would like to buy the SLP Cold Air Induction Package (Part Number 21012) for my wife's '93 Z28. SLP has discontinued this part. I have checked several different online stores who list on their website, but do not have it in stock and consequently cannot order it. Can anyone help me. I am aware of other induction packages (K&N, Moroso, & Lingenfelter), I just have my eye on the SLP package.