72firebird,
Previous owner of my car had a stretch installed, could never be too carefull about speed bumps or bottoming out. The shop that installed it made an aluminum adaption to the stock shroud (didn't hold up well against the previous mentioned obstacles either). I still have it, but purchased a stock TTA replacement from one of the members. The intercooler fan doesn't like meeting metal either. I have learned the hard way, stock works pretty damn well.