After searching the web high and low to find out what the sump bolt fitting is for crossflow engine, for anyone interested 1/2" x 20 unf.

Any good nuts and bolts place will have in stock. Head size should be 17mm.

I'm gravity feeding oil flow from the catch tank trough a banjo fitting into the sump bolt.

This is only due to not wanting to take then engine out to get at the sump befor winter. Easy fix! Hope this helps anyone with a crossflow.

Suspect you mean the sump bung?

Yep sump plug thread size and TPi.