I seem to remember that tachs were introduced on the '82 models. Turbos for the wagons started in '81. '82 for sedan/coupe.
The biggest problem I would have with that car is that the price is already over 11K! I have been eliminated.......

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John