> Also, the V8's aluminum block has silicon-inpregnated cylinder > walls that I am not sure will take kindly to massive over-boring. > You may not have a reliable block after that... If I were to go this route, I'd insert steel sleeves ... the machine shop that does work for me does it all the time for hi-po Hondas and they seem to hold up just fine at 100+ hp per cylinder. JG