public static void Inject(MethodInfo ToReplace, MethodInfo ToInject)
{
    RuntimeHelpers.PrepareMethod(ToReplace.MethodHandle);
    RuntimeHelpers.PrepareMethod(ToInject.MethodHandle);
    unsafe
    {
        byte* inject = (byte*)(IntPtr.Size == 4 ? *((int*)ToInject.MethodHandle.Value.ToPointer() + 2) : *((long*)ToInject.MethodHandle.Value.ToPointer() + 1));
        byte* target = (byte*)(IntPtr.Size == 4 ? *((int*)ToReplace.MethodHandle.Value.ToPointer() + 2) : *((long*)ToReplace.MethodHandle.Value.ToPointer() + 1));
        int* injectSrc = (int*)(inject + 1);
        int* targetSrc = (int*)(target + 1);
        *targetSrc = (((int)inject + 5) + *injectSrc) - ((int)target + 5);
    }
}