And the OP's are disappointed that the block can "only hold" 500 because their last car could hold 900 or whatever and before they sold it, it was making "600 hp" (random number just for examples sake). It also seems that the budget is tight. What I'm getting at is that I wonder if their previous cars weren't making quite as much power as they thought it did and just how fast a 500 hp car is and how much money it takes spent elsewhere besides on the motor to make it all work. Then the answer is ok, I'll use a 351 block. What heads, intake, and cam are you going to use? What valve springs etc, etc,? I'm not bashing the imports and I'm not saying that they can't make bookoo's of power, I realize that some do. But surely the ones making "block splitting" power wouldn't be all that budget friendly either. One said it was dyno tuned and it made X amount of power but he never got a graph. After a quick googling I came across a supra dyno forum. It looks like it at 27 psi one can make 600 and some odd at the tires and the moderate 10-14 psi guys are making 290-400'ish This question is addressed to the ex or current tuner crowd: are the guys w 27 lbs of boost running around w a stock high mileage motor? http://www.supraforums.com/forum/archive/index.php/t-322998.html Just my opinion but "block splitting" and "budget" don't belong in the same sentence. Don't Sext and Drive.