Header help...... LS427 into a second gen TA

[Jim Hoke]

Halp!
Car is a '79 Trans Am and am gathering swap parts. Installing a GM crate LS7 wet sump and T56, and have Detroit Speed half height mounts on the car. Also have their subframe connectors, and have welded them to the front sub and rear frame rails (no way to go back to full height mounts).
I also have Holley engine and trans mounts - which offset the driveline.

My dilemma - Holley's Blackheart full length headers are made to match their mounts, but they caution not to use these with half height body mounts.

So, am I looking at beating the crap out of my floor, or is their another choice (other than mid-length headers)?

Thanks!