Do a search for summjary. Yes, I intentionally misspelled it in the title so that it would be easy to find. Its a detailed comparison between T,E,S in 1970 vs. 1971. It was created with a lot of input from forum members and was last updated earlier this year. Some examples – did you know that the door key slots are oriented horizontal for '70 Vs. vertical for '71. The E and S for these years had an aluminum engine lid and rear center bumper panel, whereas they were steel on the T.
You might also find it interesting to look at the Hagerty Insurance valuation data for these cars. If the data is to be believed, just within the last year the S's have gone (further) through the roof.
Al