they will physically fit but there will be issues. first off you will lose several points in compression because the 67 289 originally had 54cc chambers and the E7 heads have a 64cc chamber. you're going to lose a lot of compression even if you have flat top pistons you're probably looking at somewhere around 8:1 compression or lower, not good. also, if you plan on using the 67 intake you will run into problems with coolant passages and also the later heads only had 10 (i think) intake bolts vs the orignals 12 bolts, which could cause water leaks as i'm pretty the 2 extra holes in the early intake went into the coolant passage and later intakes simpl don't have any bolt holes in that particular location. it's been a while since i messed with any late model heads so this may not be exactly correct but the compression ratio is a major concern.