Jordan Taylor rounded out the seventh and final session of the Roar Before the Daytona 24 Hours test with the fastest practice lap of the weekend.
Taylor set a time of 1:36.757s behind the wheel of the #10 Cadillac DPi-V.R he shares with regular IMSA team-mate Renger van der Zande and endurance guest Ryan Hunter-Reay.
A spate of laps in the closing stages of the Sunday afternoon session enabled the 2017 race winner and defending series champion to lay down a time that eclipsed Mike Conway's early benchmark by three tenths of a second.
Third in the final session was Formula E driver Antonio Felix da Costa, who brought the #87 Jackie Chan DC/Jota ORECA to within seven tenths of the overall pace.
However, Da Costa's effort was only enough to put the Jackie Chan LMP2 sixth in the total weekend scoring, when earlier times from other entries were considered.
Three other Cadillac drivers – Tristan Vautier, Felipe Nasr and Filipe Albuquerque – joined Taylor in the 1m 36s bracket and so filled out the top four places on the timing sheets.
Albuquerque led both Friday sessions in the #5 Action Express car, while Vautier paced Sunday morning in the Spirit of Daytona machine.
Nasr, meanwhile, was the fastest driver outright on Saturday, and also picked up the accolade of qualifying the #31 Cadillac on 'pole' in a shootout to determine pit garage positions for the 24-hours.
The former Sauber F1 driver's qualifying time was actually the best of the weekend (and the only one in the 1m 35s) but occurred outside the conventional Roar practice sessions.
Colin Braun was the top LMP2 driver of the weekend, with the CORE Autosport ORECA ending up sixth tenths short of Taylor's pace.
Fernando Alonso turned no laps in Sunday's final session, meaning the United Autosports and McLaren F1 driver concluded the Roar on a time of 1:38.072s, 1.7 seconds off Taylor.
In GT Le Mans, Porsche's Laurens Vanthoor claimed top of the pile, but the Belgian's 1:44.550s marker wasn't enough to unseat the weekend's leading time, set by Sebastien Bourdais in the #66 Ford.
Bourdais ran to a 1:43.798 during Saturday's night programme, as Ford locked out the top two positions in the grand narrative having commanded five of the seven practice slots.
Vanthoor settled for third, ahead of Ferrari's Alessandro Pier Guidi and Nick Tandy in the other Porsche 911 RSR.
Ezequiel Perez Companc set the pace in GT Daytona for the Grasser Racing Lamborghini squad, which also picked up the fastest overall lap in the class through Blancpain GT Series champion Mirko Bortolotti.
RESULT: IMSA Daytona test final practice
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