The v2 isn't out for the 98-02 4 cyl yet. The v2 has been on the adventon.com for some time now but it is not available. I ordered the v2 from adventon.com in late March only to find out that it wasn't available. At the time, adventon.com told me that the v2 would be released in early April. I called AEM and verified with adventon.com that the v2 is coming out late May. AEM told me late May and adventon.com told me May 25 so be on the look out but be aware that AEM has a tendency to push back release dates.