The LM1 with rpm converter is the kit we would recomend: http://www.innovatemotorsports.com/...ome.php?cat=248
On 99+ you would also need to get the spark plug wire clamp to log RPM, but we don't need RPM for tuning via email, its nice to have sometimes but all we really need is a/f vs maf V.
If your interested drop me an email at VMPerf2@bellsouth.net and I will email you back with pricing. Thanks.
__________________
Jason Starkey
2006 Vista Blue 4.0 Mustang