I have Indy SRs w/ Harland Sharp rockers. No need for a spray bars.

There are/were 2 versions of the 440-3 made. One was a little rougher than the other...it was just a plunge cut 4150 flange manifold and had big flat steps at the top of the runner divider. If yours is like this, you need to blend them in.

indy -3.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