I installed my Hooker LT's over the weekend and I just wanted to give you guys some pictoral evidence of the (lack of) ground clearance afterwards. The first two pics are driver's side and the last is passenger side. There's a whole 1.25 inches of clearance on the driver's side. It hangs lower than the passenger side so I didn't bother measuring that. 9 volt battery for real-world reference. By the way, these are on the 1997 Z-28, just so you know.

 

Luckily I don't have that problem with my Pacesetter headers. However, with the Spohn crossmember mounted torque arm, ground clearance is horrible and I have similar clearance issues.