1966 Barracuda radiator shroud / cooling questions

Hey everyone,
I got the '66 Cuda out of storage and wanted to take care of some things before cruising this season. Last year I had some issues with overheating and ended up puking about 2 gal of coolant while caught in traffic. I'm looking at a couple options and would like any advice you guys may have.

Right now my set up is basically a bone stock '66 Cuda, but with a 360 block and heads. I have the factory 22" radiator, 4 blade fan but no radiator shroud.

What I'm thinking about doing is either adding a shroud and overflow / recovery bottle or just sticking a 14" or 16" electric fan infront of the radiator as a pusher for backup cooling while in traffic. I have no problems when driving around, just when stuck sitting for a while. How much will a shroud really help in this situation? Would it be better to just go with an aux electric fan?

I know the '66 273 metal shrouds are pretty hard to find, ive seen a few for sale but haven't decided to pull the trigger yet. Searching on here Ive also seen a couple guys using the 70-72 plastic shrouds from 318/340 A bodies. They're for sale on mancini's for about $150. I also saw a B-body metal shroud on mancini's as well. Will this fit the 66 Cuda? It says its for a 22" SB radiator.

Heres mancini's link: http://chucker54.stores.yahoo.net/rafansh.html

What would you guys recommend? Shroud with overflow or just go with an electric back up fan for when stuck in traffic?
Thanks!