I've got a set of plugs, which although not tapered, fit fine.  I got them 
from Mike Young at Sports Imports http://www.datsunsports.com and they look 
very nice.
At 04:32 PM 9/26/2002 -0700, John F Sandhoff wrote:
>Regarding plugging the smog ports, it was written:
> > Aren't those plugs sized in national pipe thread?  I thought you could pick
> > up the right size plug at any hardware store.
>
>They're very close. Close enough that with a pipe plug and a wrench
>you'll end up retapping the soft aluminum head :-(.
>
>Tom Walter used to make correctly sized- and shaped- plugs, but
>he's been way too busy lately to churn out another batch. :-(
>
>-- John
>      John F Sandhoff   sandhoff@csus.edu   Sacramento, CA
>
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Adam Bradley
'70 Datsun 1600 Roadster SPL311-28181
'67 Datsun RL411 SSS sedan RL411-11321
'66 Datsun PL411 sedan PL411-022447
http://www.picturetrail.com/abend
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