Yeah, the Allison is a little hot rod, but with an older 100hp. you’re probably looking at about 50-55mph. – maybe, if it’s set up right. My friend with the Allison is using a 14′ or 15′ Baja with an older OMC 4 cyl. now – just rebuilt and just a few upgrades for a couple more HP, he gets about 62mph. but the Baja doesn’t have a pad on the bottom and it chine walks some, probably not a problem on an Allison. C’mon, get the Allison, an OMC V6, hydralick jack plate, propped right, 80-85mph.