i have the trick flow heads and let me tell you: without doing any porting they are awsome. i was running mid 12's with the combo that i had with a 302. now that i have a 347 i can just imagine the damage i am going to do.
Somebody dug up this one... someone actually used the search (applause)
In case no one knew, I went with TFS TW's because I found a good deal on them. Nice high quality head with lots of room to grow. They can have some monster flow when ported. I will probally run them as is and then later get them ported, if I do the 347.