legacycentral bbs

I know this has probably been asked a dozen times, but with all the conflicting info I have been finding I need a straight answer. I am putting ej25d heads on a phase I ej22e ('92) block. I would like to know what head gaskets I should use. It makes sense to match the block and use 97mm bore gaskets, but some people claim they use 100mm and they are fine. I was advised to go with the thickest gasket I can which also makes sense, but some people have used .040 and claim that it works as well. Any help is much appreciated. A cometic part # would be ideal.

I have already done the 25d block with 22e heads and was not thrilled with the results so please don't tell me that is a better choice. Thanks in advance.