engine swap help/info straight 6 to 351 cleveland

i have a 1977 ford f150 4x4 with a straight in it i am installing a 351 Cleveland in it need to know if the engine mount converter kit for the 351 Windsor with fit the 351 Cleveland
also will i need to change the headers on it or can i keep it stock ?

any help would be great thanks

If i was doing swap, i would get motor mounts, oil pan and pickup out of 1979 f-150 4x4 with 351 modified.This is the simplest and cheapest way.The manifolds off the modified well also work. If you are planning on using electronic distributer, same donour engine or 460 well work.