That would be a D315 engine same as the D4 6U & 7U and Old Magnet on here has all the info. you need to convert to the DS so I,m sure he,ll tune in & give you all you,ll need to do the job.You could get the loaders either way from the factory when they were new.
All the info you need is at this website........same as D4....just a little bit tighter to work on with the loader framework. At least the hard part is done, they already have the drilled mounting flange on the bellhousing.
http://img400.imageshack.us/gal.php?g=header4oq.jpg