/6 to SB motor mount questions? Schumacher Alternative?

Well I am curious about what mounts to use when swapping my /6 to 318.
I know I can buy Schumacher mount kit (A63A) which is about $162 shipped.
But I have been reading that the early a bodies all have the same k-member. So it doesn't matter whether or not it is /6 or SB.
I was wondering if I were to just buy some original 273 SB motor mounts out of a early a body will that work too?
I know that I can usually find the original style motor mounts out of early a's for around $80-100 less then Schumacher.
Well thanks for all the info in advance.