Plugs for an HEI setup?

[Project1970]

I figure if I'm going to pull the plugs on my engine, I'll go ahead and replace them, they're cheap enough. It's just a more-or-less stock 1970 350, original in the truck...I believe the standard plugs with .035 gap are ACDelco R43's? Do they make that plug with a .050 gap instead? (because I'm just lazy like that and if the cost is no different, why not... =)

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Project 1970 - soon to be seen at http://milhouse.treylis.org:81/