I know it's tight, but I have the Spitfire headers and the flange dumps right above the torsion bar so I know it can be done. My exhaust guy squacked about how tight it was but then had the downtubes worked up in about 15 minutes!! I think he was just looking for a few extra $$ for the bitchin!!!LOL!!The drivers side is tighter than the passenger side, but the 90 degree filter adapter doesn't help on the passenger side either, but you can loosen that and turn the filter back a ways to open up the clearance a bit!! Geof