Im interested in buying a set of d16 sohc vtec pistons off ebay, there srp.

Problem is I am building an A^

head is already doen and I was just about to buy a block

Now I dont know what to do, if I put these pistons in an A6 block with an A6 head, will my compression drop

What If I mate the A6 head to the proper block the pistons were made for?

I dont know what block they are for yet, I jsut emailed the guy and the auction just says sohc vtec from the civic ex and del sol, help me out guys

My head is milled .040, but how far will this drop the c/r

Thanks