If I were building for a truck engine, I wouldn't want to increase the compression ratio over 9:1 because then you will have to use a longer cam which in turn will move the available power higher up in the rpm range, just opposite what you would expect from a truck motor.

Make up your own mind what you want to do, but if it were mine, I'd use the Keith Black #KB203 which will have thick rings (5/64ths") and make 9.0:1 with 118 cc heads. Then I'd call my favorite cam grinder and tell him what I wanted to do with the motor and go by his recommendation. Alternately, I'd use this cam which would give me a dynamic compression ratio of 8.00:1
http://www.cranecams.com/?show=brows...tType=camshaft

Here's the KB info.....
http://webpages.charter.net/beckracing/page36.htm#SECT3