I have a cheap 440source aluminum center sump pan on mine. Been fine for years using a Milodon single external pickup system. The one in the pic is compressed slightly from a wheelstand, lol.
I did pick up a used Charlies pan a couple years ago, but I haven't gotten around to putting it on yet.
Those Shorty's pans look awesome!

oil 2.jpgCharlies pan.jpg

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax