Oh and the #1 thing that brings a 225 in to the 21 century is decking the block and/or head to get some compression out of it. The two I have pulled apart have measured out to a miserable 7.2:1 compression.... Take 0.100" off the mating surface (head/block or mixture of both) and you will get into the high 8:1 range and it will run MUCH MUCH better and be a good base for the 2 barrel to utilize later.