We present results on re-engineering a highly-tuned, hand-coded memory simulator using the P2 container data structure generator. This application was chosen because synthesizing the simulator's data structures would not exploit P2's primary advantage of automatically applying sophisticated code optimization techniques. Thus, we initially believed that using P2 would be an overkill and that P2-generated code would provide no performance advantages over handcoding. On the contrary, we found that P2 produced more efficient code and that it offered significant advantages to software development that we had had not previously realized.