I wrote a previous message about my 396 that I want to put in my Buick Regal and I am thankful for the responses that I got but I still have a couple of questions that I need answered. The 396 block needs a sleeve, does that mean that there is no chance for the block even if I get a sleeve and build and condition the whole block? I wanted the 396 because they are more rare than a 454. After the 396 I wanted to move up to a 454. I would really appreciate it if someone would help me with some info, I also wanted to know if the sleeve is put in the block and I still build it, what are any of the cautions I need to be concearned about during my build up.