It would be an extra $300 to put the 12mm plug holes in all 6 heads. That's it. All the other things needed to do twin plug are not included.
My answer was 'not at this time'. I think I'm just going to keep this engine as stock. I'll build a monster twin plugged beast on something else 
Thanks for the comments all!
-Michael
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 Michael
'82 Euro SC 'Track Rat' 22/29 Hollows, 22/22 Tarrets, Full ERPB F/R, Rennline Tri Brace, Glass bumpers, Pro 2000's, 5 pts, blah blah blah
'13 Cayenne GTS
Last edited by euro911sc; 05-03-2007 at 08:29 PM..
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