K member question

it would be helpful to be specific regarding what year you are working on. 67-72 is all the same regarding the engine Installation, with one slant six, one V8. A 340 will work in any V8 A body car 67-72, as long as it is an original V8 car. A washer was not on all 340 cars,( I have an original with no washer) and Some minor changes are regarding suspension, mainly Idler arm. B bodies were the same, the idler changed 67-68. A Big block is a whole another thing. it isn't that complicated., tell us which year you are working on.