would the 5th gear from the b18b1 s80 be a direct fit no problems in a b18c s80.. they are both s80 boxs. just my reason to do would be to bring down the revs a bit cause ill b doing quite alote of motorway driving. cheers
Yes they should mate just swapped a s80 4th and 5th fr a s4c ones with no problem, As far as im aware all the parts for b series transmission are interchangeable.
