You need one of these....a 187 pan....weld some baffles inside of it...cut the top of the sump off and weld another one on it....homemade 7 qt A body pan....
That is the pan to use the 187 , but I think what he wants is something that DOES NOT hang below the K frame , cutting and adding to the sump , especially to make it 7 qt will give him exactly what he has with his currnet pan.
I'm getting ready to modify a stock B/E hemi pan to fit a stock BB a body K member , though I have original BB A body pans , they just don't hold enough oil .