A single line will work fine, but nothing wrong w/ going dual. The pan will be OK, as long as you have good oil drainback and don't flood the heads.
For a vacuum pump...Moroso, GZ, or Star make good pumps. Just DON'T use an Aerospace Components pump. Looks like you already have a Moroso pump.
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
| 
