Thanks for the links, Patrick - this stuff is pricier than I expected.

Kenny, if you see this, maybe you can pinpoint which shape of bits in this link you used on your head in the exhaust ports (I'm not working under the valves this time around) on your 200 head.

http://www.heavydutystore.com/die-gr...ts-c-1683.html

I haven't even checked sears or other hardware stores for carbide tips - will do so this weekend. Thanks for the water jacket warning - I've been consulting the guys on the Ford Six performance forum about where and where not to grind.