OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has upgraded the Financial Strength Rating (FSR) to A- (Excellent) from B++ (Good) and the Long-Term Issuer Credit Rating (Long-Term ICR) to “a-” from “bbb” of Repwest Insurance Company (Repwest) (Phoenix, AZ). The outlook of the Long-Term ICR has been revised to stable from positive while the FSR outlook remains stable. Repwest is a wholly owned subsidiary of AMERCO [NASDAQ: UHAL], a publicly traded holding company that is also the parent of U-Haul Int