Shroud depends on the vehicle.Look at factory setups.A lot came minus shrouds.I ran my 65 built 440 for years without one.When I got the C body rad from the junkyard it had an OE one so I ran it.My kids 62 300 413 has no shroud.Both never get over 180 or so.If it runs OK dont sweat it.We both run stainless flex fans and mines been on at least 20 years.My rad has never been touched and is stock 65 BB.Rocky