tap questions

[willie]

I cant find a 7/16-18 tap for the main jet wells,will any other thread pitch work? what size tap is used on the small lead plugged ports i have seen 2 sizes listed. thanks,willie 

[nicks442]

you can order from Msc.
http://www1.mscdirect.com/CGI/NNSRIT?PMCTLG=00&PMAKA=66556721&partnerURL=http://catalogs.shoplocal.com/mscdirect/index.aspx%6Fpagename=shopmain%50circularid=13665%50storeid=1040626%50pagenumber=303%50mode=