currently running a d16y7 with a d16z head thats port and polished with a greddy tdo4 turbo. problem is the guy who put the set up together for me, doesnt know what year of the head gasket is for and what year the head bolts came off of. i currently had a blown head gasket and in process of trying to find out which year the head gasket is along with the head bolts. also need the stock bore size of this block. think its 76 mm but not too sure. also planning on building a new block but know which is the best. i know that obd2 blocks have a harder kick as far as vtec goes. but would the d16y7, d16y8 or the d16z6 be the better block of all..please help ......very new at this know enough not to get ripped off but not quite enough to do it myself. all replys are greatly appreciated......