I couldn't see how much interference there would be if the HVAC was left in place. I do know that with the proper K-member that the Hooker Headers 2455 will fit with the HVAC still in place with a little massaging on the HVAC box. I didn't have any problems with the firewall after I went with the BMR Fabrication K-member though.
I'd go with the 2455's and just check for the fitment and massage what needed to be, with the HVAC still in there.
__________________ 1995 Z-28 454 BBC 650 HP,Built 700R4 Trans with 3500 RPM Stall BMR Fabrication K-Member, Adj. LCA's, Adj. Panhard Bar, UMI Weld in LCA Relocation brackets, Jegster Shortened Adj. Torgue Arm
15x4 SportStars with MT Sportsman Fronts, 15x10 SportStars with 325/50R/15 MT Drag Radials
Moser 9" Rear End Narrowed 3" per side from Exotic Performance Plus.
Last edited by cwaldt; 12-04-2006 at 03:20 PM..
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