Would a 22R lazor block with flat top pistons work with a 22R cylinder head that came out of a dome top piston block?

Yes, a 22R lazor block with flat top pistons can work with a 22R cylinder head that originally came from a dome top piston block, but there are important considerations. The compression ratiOS and combustion chamber shapes differ between flat top and dome top pistons, which can affect engine performance and efficiency. It's crucial to check for proper clearances and compatibility, as well as to consider tuning adjustments to optimize engine performance after the swap.