Don't know about "kits" but I'm pretty sure they have all the individual pieces. Give them a call with your part numbers.
Last engine I enquired about was a D333, but even with that one, most of the engine gasket sets listed in the parts book were no longer available, EXCEPT the valve grinding gasket set. I bought a D311 head gasket set a couple of years ago.
Like OM says they usually have the gaskets etc, but only as individual part numbers. The Federal Mogul/FP Diesel aftermarket engine parts supplier had other engine gasket sets for overhaul.