also note, early cars (rovers and freelanders too) frequently had head gasket failures reported. most likely due to the use of plastic dowels to locate the head to the block. R400 shouldn't need that sort of attention unless its been battered within an inch of its life on trackdays, permanently!!! Most lower speck K's are pretty good, especially since the move to eu3 in 2001 ish, when they started using the stell dowels for the heads...