904, 8 3/4 in early A drive shaft

have - 65 2dr Variant with a slant six, rounding up parts for a V8 swap, have a 8 3/4 sure grip rear, have a early 70’s 904 trans and a 340, is there any drive shafts that are factory that will work in this combo or will I have to get one cut, any and all info is appreciated, thanks