I need a head that fits a 650 h1 or 700 h1. It can be a good or bad head as long as one intake valve guide is in good shape. A customer had a freak occurance and one valve guide cracked. Never seen this happen and it could be the customers fault. The guide cannot be purchased from Cat sepperatly from the head and who wants to buy a $1000 head when they need just a valve guide.