I C the aftermrkt ones for the other motors in the on-line catalogues (Ford Racing, Moroso, Kevko, Canton, Milodon, Holley).
Windage trays, baffles, deep sump, trap doors, rear sump, crank wipers (I guess that's last 1's higher than the pan) can B added.
I know of several done to our 250s when placed into Broncos (it has a frnt chunk as well as the typical "third member' in the rear that's in danger of contact w/the pan).
One, they wacked off the frnt corner & brazed (or miged) a plate across the opening,
*Another the whole pan was cut offa the 'ring" (top, bolt up 'flange" - all the way around) & attached to the 250's
another method - a sheet of mild steel was 'rolled' inta 1/2 tube , attached to the two long sides of the 'ring', & a flat frnt/back attached.
Finally, some R simply 'adjusted' w/a BFH (while on an anvil, scrap engine block or in the vehicle itself) to 'cave in' under controlled measures rather than by the frnt differential under uncontrolled conditions (i.e., a mistake).
Many of the guys can fab up 'anything'.
If U wanna increase capacity U may want to lengthen the p/u tube as well. Most R designed to suck the oil up offa the 'floor' of the pan (1/8th - 1/4 inch above).
* I may use a 170 or 200 (rear sump) pan attached to the frnt sump 250's 'bolt ring' in this bronk (& 1 of those longer rear sump's pick up tube/screen).
Can U add any more specificity 2 yer Q?