Are factory door panels available for my '95 T100 SR5?
I am guessing you mean the interior, and not the door skin (sheet metal). There may be some new ones available through the dealer, but you better be prepared to write a rather large check. I tried to get a dashboard for an 87 Supra I had and they wanted something like 800-900 dollars

. Your best bet is to check craigslist or similar for someone parting out a T, check
www.car-part.com (they have a ton of stuff, hopefully near you), or check around your local wrecking yards. Note: Some Ts have cloth door panels, and some have flat plastic.