Yes you can fit 20" rims on you 1979 cutlass, if you wanted to you could fit 22" rims with low profile tires with the stock springs.
no they won't fit,diferent bolt patern
Yes they will
Yes they can the stock rims on new models are not like 24's they are still small stock size and will fit on your older model. Good Question
With adapters yes. Stock no. buy addapters and you can get them to fit.
With adapters yes. Stock no. buy addapters and you can get them to fit.
Not on a stock vehicle. With modifications to the suspension they will fit.
The tires will fit on the rims but you will have to try them on the truck to see if there are any clearance issues. There should not be any problems.
Taurus and Sable have their own sized rims from 96 to 2001. Other Taurus rims and Tempo and Windstar rims will not fit.
no
Of course they will.
Yes