When two boats share the same hull type — in this case both the Supra SA450 2013 and the Supra Sunsport 21V 2013 are modified vee designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department — Supra SA450 2013 at 22,5 ft versus Supra Sunsport 21V 2013 at 21,3 ft. At 43 lbs and 35 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 450 hp, the Supra SA450 2013 has a 105-hp advantage over the Supra Sunsport 21V 2013's 345-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 5 gal and 5 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Supra SA450 2013 is rated for 13 passengers, while the Supra Sunsport 21V 2013 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Supra SA450 2013 could be the deciding factor.
Bottom line: Choose the Supra SA450 2013 if your priority is putting more people on the water — it handles 13 passengers and at 22,5 ft it has the deck room to back that rating up comfortably. The Supra Sunsport 21V 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 12 that costs less to run day-to-day.