I bought the catch can from Mike Norris and according to his site, it doesn't need to hook up to the valve cover. I hooked mine up the same as on the site.
http://www.mikenorrismotorsports.com...atch_Cans.html
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Mike
Pro Touring 68 Acadian(Nova)
Speedtech subframe with high clearance control arms
Prodigy Bar rear suspension
Ridetech single adjustable coilovers
Wilwood 12.2" brakes
New Gen Splitters
LS3 and TKO600
Link to my build:
https://lateral-g.net/forums/showthread.php4?t=14349