Original black tank removal, starting on the new tank top

Cut the top off the old tank to use for a pattern

Clearance for shower trap

drilled holes to mark features

using a stainless bowl to form shower trap clearance

heat melts foam

blocks set depth

used a wire wheel to clean the foam off the bowl bottom after it cooled

Stripped torsion bar adjusting bolt

One side of the adjusting bolts stripped while adjusting height. Fortunately I had a longer bolt from Applied GMC in my spares. The bolt is what stripped and the nut while not the best will live on. A tap cleaned up the the threads in the nut pretty well. I did shorten the new bolt to match the original.