You're welcome. Some more info.
I used an engine from a sn95 mustang as a donor. Kept the EFI and serpentine belt. Like Phil, it had a dipstick hole in the block. Used a 3/8 freeze plug to block it.
Unlike the fox body donors, you can't drill the brackets and timing cover for a front mounted dipstick. I was gunna use a Canton pan to get a pan mounted dipstick, then found out bout the Falcon pans with a dipstick. I don't think America has a similar pan.
I think a 3/8 freeze plug would seal either the pan or timing cover.
A word of caution, it's possible that hammering in a plug into the plate in the side of the pan could loosen the plate resulting in a leak, maybe cut a block of wood to support the plate from inside the pan. My donor pan came from a burnt out EB GT. the fire burned the gasket between the plate and the pan, making the plate loose. I made a new gasket outta gasket material, re-rivetted it with sealed rivets so that oil couldn't seep through the stem, used rivets with a steel stem, they pull tighter.
Lotsa choices. Good luck.