On a normal year I would find a 360 block…buy the speed master heads as per the rules…get some pistons and take a run at building something that would fit the rules and hopefully not embarrass me on the dyno…but in the last 12 months I have done 3 engine builds and currently have a LS 5.3 on the go…so the only way I can jump in is to use parts I already have on hand…these include some offshore aluminum heads, an old 3.9 or 4 inch stroke crank, and 340 block that needs at least a 40 thousand over bore…I have a few intakes and oil pans…so that would leave me buy some cheaper pistons ( SRP or JE ) and a decent balancer…I think if we want to get any more guys involved open it up to any sbm 273 to whatever displacement you can build using a factory block…and any non offset rocker heads that have been commercially available in the last decade….BUT it is not my contest