Valve pocket/bowl hog tools....

That's where most of the flow is, but I always set the valve job first and then blend out to it. Not the other way around. The valve job is the single most important port work you will do. Been a while since I looked at a slant head...but...here it comes...I wouldn't be afraid to do a 50 degree seat on that.

Also, what do you have for rockers?

That's how I plan to do it......even though I said it backwards. I have perhaps one of the best head porters in the country local to me.........but he swore off cast iron. LOL He's said he would help get me in the right direction though, so "we'll see". lol