Looking into oil pans, there are a few options:
Moroso 20155:
Holley 302-22
-- or --
302-20
Holley also has a LT road-race oil pan baffle, for use with 302-20:
Apparently, these fit Gen V LT wet sump engines up to a 4.00″ stroke.
It is recommended to use the LT Dipstick & Dipstick Tube – GM p/n’s 12658475 & 12661062 for the Holley solutions. Moroso recommend GM #s 12643278 and 12652951.
Also, realize that the LT1 has a different oil cooler than the LT4 (which is bigger and won't fit in my application).