Hey Hemiguy , Just saw a Hilborn distributor drive pump with mag on top on e-bay. It's not for a y-block but might be able to be made to fit. Tops and pump are all the same could possibly machine bottom to fit. Hilborn sells new shafts for y-blocks. Look under Hilborn Injection

Larry Short     

This is my unit I got a few years ago at the Columbus fall swap meet. Larry

Hears a better look at the inside where the Mag bolts on. No longer do the use the slot drive. Larry

I

I think this is what your looking for ? Sorry this one is not for sale , It's going on my 50's Y-Block powered front engine Dragster. Be careful if you find one. I had to send mind back to Hilborn for a complete rebuild. They don't have many parts left for these. I'm using a Vertex Mag on top and found the bottom mag adapter on e-bay. I would keep checking e-bay, never know what you'll find on there. Also the new shaft from Hilborn use a hex drive for the Dis/Mag not the old slot Dodge type. Hope this helps a little. Larry Short

looking for a ditributor drive pump for my Fuel injection unit