My suggestion for that problem: If you can't find plugs that won't be blown out by that Vortech...
Keep your current plugs as your 'street plugs'. You dont need to worry about power loss on the street, you'll never use that much to notice. Buy an extra set of 8 plugs and bring them with you. When you get to the strip, change them out and use them just to drag...when you're done, put the 'street plugs' back in. Yes, it's a ROYAL pain in the ass....but if you can't find a plug that'll stand up to that Vortech beast, that just might be the cheapest solution if you still wanna cut good trap speeds.