i have a 440 block that has E440 12 13 2 stamped on the pad.casting # 2536430-10 date 11-14-68. the vin number on the rail is CH43K9F187976. when you check the vin it comes back as a http://www.decodethis.com/VINDecoded/tabid/53/Default.aspx?vin=CH43K9F187976 chrysler newport,300,newyorker. someone said it could not be a hp block. didnt they put hp engines in full size cars also ?