IAM as applied to Diecasting

We are a relatively small die casting plant located in midwestern U.S. . We are struggling with out of date technology and nearly worn out equipment. Maintenance is on a "put-out-the-fire" , and "patch-it-up-get-it-back-in- service" maintenance schedule. Which only leads to more down time and more questionable quality production. The price tag of newer technology, and fear of the future (economy/imports) make it hard to sell the owners and senior management on the importance of planning for growth. Ours is a niche market of shorter product runs and many changeovers. It is difficult to talk of MRP, ERP, or JIT, in our specific manufacturing environment where orders may just "drop in" without warning. Many of the 300+/- parts that we produce are replacement parts for older model agricultural equipment. Flexibility is the key. Now to the question.......Would IAM be applicable, and flexible enough to serve our needs?