try BLACK BOOK thats what dealers go by more or less for trade ins. My 99 CSVT with 81k books out at $5575. damn.
Of course you wouldnt trade in a modded SVT you'd sell it out right.

99 SVT "nice" 14.67 @ 92.6 mph (street trim) FOR SALE contact KEVIN.BOX@CINGULAR.COM http://www.cardomain.com/ride/1592122