I've got a 16R/30 Stack-fold 1720 Deere Planter.  Its been converted, rebuilt, and customized more times than I can count and does everything I need it to do.  I'd really like to put the vacuum in the toolbar to clean things up.  Drilling/cutting the holes shouldn't be too hard for most of the rows and I'd have my son draw up some and print some bungs that can be siliconed into the holes.  I figure I'd need 16 1.5" holes and four 3.5" holes.  Has anybody done this or does anybody have any concerns about doing this?