Go to your local auto parts store and buy a Haynes Auto Repair Manual for 88-96 Ford F-Series/Bronco. This and much more useful information can be found there.
Start with distributor cap/rotor, spark plugs and spark plug wires.
( .054 inch ) according to fordparts.com for the 5.0 liter / 302 cubic inch V8 engine in a 1992 Ford Mustang
The spark plug gap range for the non-Boss 302 is 0.032"-0.036".
.044 inch in a 1979 Ford truck 302
.044 inch
( .054 inch spark plug gap ) according to fordparts.com for the 5.0 liter / 302 cubic inch V8 engine in a 1989 Ford Bronco
According to www . ford parts . com ( no spaces ) For a 1988 Ford Bronco , 302 cubic inch V8 engine The spark plug gap is ( .044 inch )
Plug Gap .032"-.036" Point Gap .017"-.021"
According to one of Ford's websites : For a 1984 Ford F-150 , with the 5.0 liter / 302 cubic inch V8 engine : ( the spark plug gap is .044 inch )
302 ford soft plug for camshaft
( .044 inch ) according to motorcraft.com
proper gap is 42-46