CHRYSLER <C> IN DEAL TO BUY AMC <AMO> Chrysler Corp said it agreed in principle with French state-owned Renault to acquire American Motors Corp., in which Renault is controlling shareholder, under a deal in which AMC stockholders other than Renault would receive Chrysler common stock with a market value of four dlrs for each AMC common share they hold. Chrysler said the letter of intent for the deal, which needs government and AMC shareholder and board approval, provides that AMC holders will receive not more than .0840 or less than .0687 of a share of Chrysler common for each share of AMC common they hold. more