oldfella

That's testimony enough. I drove mine several hours on the intertstate in low 90's a few weeks ago and wasn't real comfortable, even on cloth seats, with a fresh charge to the a/c. That black top was a little too toasty.

dwb91lx

I did a liner on my '91 about a month ago with a new top. It is easier/quicker to install during top replacement... Big time visual cleanup on the interior...yes it is quieter...it does add a few more prep steps to drop the top...Velcro at the hinge points above doors needs to be undone (few seconds effort).
I supplied the headliner to my upholsterer along with a retrofit install pkg (for pre '93) purchased from Matt Highley @ FoxResto.com. The kit came with snaps, Velcro stuff, etc. for about $25 and I downloaded installation instructions from one of the Fox Mustang Mags (Matt should be in the Fox Mustang "Hall of Fame" by the way...IF I would have ordered a 1993 Robbins rear glass window section it would have been waaay better because that particular window section comes with its Velcro sewn on. I could not get the retro velcro that attaches around the window to stick to the fabric surface...kept pulling off. I ended up having to glue the Velcro on....and it works fine. I am not sure if a '93 window section will work on a pre '91 top because of the slight frame change. I would also recommend professional installation as nothing looks worse than a diy top (kinda like bad tinting &#128563. That's my two cents