No.. so no you cannot. We do allow cutting out the front bar in the spoiler to improve air flow and this works very well.
Joe Paluch
944 Spec #94 Gina Marie Paper Designs
Arizona Regional 944 Spec Director, National Rules Coordinator
2006 Az Champion - 944 Spec Racer Since 2002
Either should be unnecessary with a proper cooling system & possibly an oil cooler. Cutting the cross bar in the front air dam tends to make them weak.