That Smith boat reminds me of the old early-mid 80's Tempest 44 cockpit sport yachts. It came with a choice of triple 370hp mercruisers turning TRS drives (remember those?) or if you wanted, it was available with twin 375 or 475hp Caterpillar diesels or with twin 610hp Detroit 12V92's. It was also available in a center console version with a single 900 hp 16V92, all with stainless inboard surface piercing drives.
Stainless drive pic here. I understand only one of the single engine center consoles was ever made.
I was the Dockmaster at Waterway marina in Palm Beach Gardens and we were a Tempest dealer, although we only ever sold one of the 44's, and it had twin 475 Cats. We also had one with triple Mercruiser 44's in stock for more than a year. VERY expensive.
It was a heavy boat. Top speed with the gas Mercruisers was about 62, and with the 475hp Cat diesels it topped at about 65. I don't know what top speed was with the other set-ups.
Here's a couple of links with some pics of a Tempest
Tempest 44 for sale
Another here in FL
I understand Tempest still makes custom yachts, and still seems to prefer surface piercing drives. The current 72' Tempest comes standard with Triple Detroit Diesel 16V92's and surface drives, just like the 88' Tempest in the early 90's
88' Tempest from 1992
__________________
Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury