I think you already know the answer. This is one area I refuse to skimp  I wouldn't use the cheap stuff. I've had them that the swivel fittings were either real loose or tight and bind up. Scary. I've been using Red Horse Performance fittings lately b/c my local machine shop has a ton of them on the shelf. Good stuff. 
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
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