Personally I would NOT run the car without the J&S...
And NO I dont think the motor would last the weekend without it... you can NOT use the stock knock sensor (ECU wise) to control knock on the SVT with ANY type of Fored induction.
[B]1951 McCormick FARMALL M
2007 MINI Cooper S Turbo... new project car
1998 Chevy 3500 Ext cab, long bed, 4x4, duelly, turbo diesel
2004 Harley V-Rod.... sex on wheels
2011 Harley Electra Glide Ultra Limited