I recently purchased the "Interior Sound Proofing Kit Porsche 911 '65-89" from Lakewell which I intended to install while replacing my carpet. This is a set of pre-cut 'Hushmat' style panels designed to fit the rear section of 911's from 65-89.
My original factory sound proofing was in excellent condition so the installer recommended not to replace it at this time.
(Though we did install the add-on floor pan pieces that Lakewell sells along with the main kit).
I also purchased and installed Hushmat sheets for the inside of my doors. The installer used 5 sheets from the pack out of 10, so five are remaining.
I'm selling both the Lakewell kit and the five sheets of Hushmat.
I paid 180EUR plus ~100EUR shipping for the Lakewell kit = $410, asking $275.
I paid $195 for the 10 Hushmat seats, asking $80 for the remaining 5.
Shipping would be on top of this - they're reasonably large and heavy, so not sure what that would cost. I'm in Toronto (East end) for local pickup.
Note: Trying everything I can think of to get photos to upload... hopefully I'll have some pics soon. In the meantime the Lakewell kit is here:
https://www.lakewell.com/en/porsche/911/74-83/interior-sound-proofing-kit-porsche-911-65-89
and the Hushmat is here:
https://www.nosreproductions.com/product/00/10123593/HUSH-Mat-Sound-and-Thermal-Deadener-10-Sheets-at-12x-23-19-square-feet-