Kip's is a '64 1/2 Mustang notch with the 289 / 225 / 210 HP. He holds the SS/L record:
SS/L 10.13 129.51 03/08/08 Kip Martin - Phoenix, AZ
'64 Ford Tucson, AZ
Look for quicker ET's in 2009 from Kip...
I looked at the 352 with another racer and it looked REALLY good. And I would agree with the others, for your boat the 352 would do very well.
Never thought about it as a SS/GT...wow!