Mine is going in now. (Mass backed, loop carpet, not an exact match to the 91 color - but I knew that when I bought it.) Yeah, it's really close, but there are only so many shades a mfr. can offer. Also, the Toyota loop pile was known for fading badly over time, so the carpet you had is likely not the color it was when new. We were able to get almost an exact match on the 60/62 colors, but the early 80s with loop pile are probably a 95-99% match.
First impressions: quality product. Yeah, it's heavy, isn't it? Mould form seems perfect. I'm working on a mass-backed 100 right now, and I'm finding the same thing. I didn't realize there were no holes cut into it - so keep that in mind. This mfr. does that so people can change their vehicles to their liking. Their position is: You can always create a hole for a new shifter, etc., but you can't fill one if a shifter, etc. is no longer there. The mass backing seems like a worthwhile upgrade to me compared to carpets I've installed in the past. I'm glad to hear your opinion on that. From my perspective, the jury's still out on it. Once installed, it'll definitely be worth it, as the carpet is, thick, heavy, and "stable" with this mass-backing. The only downside for me is it's harder to work with / cut than the standard carpet. At the end of the day, I'll probably still be happier with the mass-backed, but it's sort of a toss up on whether it's worth the extra step of adding DynaMat and then the carpet or working with a more unwieldy material all at once. I'm thinking the mass-backed is going to be a better heat and sound insulating product once it's installed.
I have the front section 50% installed. Took me about two hours, but I work slow.
I'll post pictures when it's finished. PLEASE do! I still have not been able to come up with any post-installation 80 photos. I've got 60/62 and I'm about to have 100, but I need some 80 photos.
Thanks again for the update!
David