What year? I presently have a '99 Excalibur with a 502 and even thought it's heavy,(3800#'s dry), I'm still running 69.5 on the GPS with a labbed prop and Vortech Maxiflow kit. It's supposed to be built to the same specs as the Scarab, does a little chine walking on top end, but nothing scary. Btm line is I like it. Hope this helps.