I took a different approach. I found a remnant at Home Depot that closely matched my original carpet for $16. I bought a roll of Reflectix for $24. I cut the carpet to shape and put the Reflectix underneath it. I just layed the new stuff on top of the old stuff.
Not perfect but plenty good enough. Added insulation for heat and noise in addition to spiffing up the interior.
I aslo did the Dynamat in the same time frame.
2001 Winnebago Adventurer, 35U, W-20 8.1
F+R Trac bars, F+R sway bars, SafTsteer, F Sumo Springs, 4 Koni FSDs