383 Body manifolds in an A?

I`ve got a H code FS with a 4-speed. Bought the car without engine and tranny. The k-frame has been replaced at some during its life here in Sweden for a engine spoolmount k-frame, why I dont know.
I bought the tti A-body BB z-bar kit, however had to modify the z-bar to clear the headers and grind of some material from the bracket that attaches to the bellhousing. Non of this work were any kind of a big job. This combo works very well with the A-body tti headers without any interference issues. Had to use a ministarter though.