[Wolfelet]

The lower piece is just a hollow core piece of fiberglass. After measuring 3.5 inches, I drilled holes through the lower piece. I then taped the risers in place to mark the holes. The risers are solid resin/fiberglass, so after the holes were drilled, I put in anchors to reinforce the union. I added some brackets on the backside for even more strength (they're not visible from the front). I have some screw caps that will cover the screws on the very bottom once the final test fit is finished so the screws cannot be seen. Then paint and install. Afterwards, new dual heat shielding from a Z4M along with the center tunnel cover that covers the relocated fuel evaporater box. Relocate the battery to the trunk and place a new floor cover to cover the hole left by the battery box being removed. Once complete, the true dual exhaust can be ran with straight pipes from the cats back.