ratlover, the shop I used to work at did mostly diesel and industrial engines. I have used tapered pins to repair cracks on dozens of gas and diesel heads including Volvo/White heads. I had a customer who, like you, couldn't swallow the cost of a replacement or exchange head, he had a 1693 Caterpillar engine. By the time I was done, there were over 80 pins in the head. The head was pressure tested after the work was completed and showed no leakage. When I left the shop 7 years later, it was still running strong. Done properly the repair will last. Find a good shop and good luck. I hope this helps.