I know you are looking for road but I still think is safer to go on the track. Perhaps, E-Town or NJMP. I know Porshe Club of DE is hosting one on October in NJMP. Is hosted by Porshe Club but is open to public for anyone interested. Price is not bad, too. Check it out. 
Hope this helps
__________________
J-Tune Performance.com
Dynapack Dyno Tuning
302-998-6988
Authorized dealer of WORK Wheels, SSR, VOLK, WEDS, OS Giken, Motul, MINES, Tanabe, Osiris, GReddy, and so much more
|