Brian Lara and Ramnaresh Sarwan built on fast bowler Corey Collymore’s seven-wicket effort to help the West Indies thrash Sri Lanka by seven wickets in the second and final Test here yesterday.Sarwan and Lara drove home the advantage created by Collymore with a 161-run stand for the third wicket as the West Indies comfortably chased a 212-run target to clinch the two-match series with more than two days to spare. The opening Test at St Lucia had ended in a draw. SCOREBOARD Sri Lanka (1st innings): 208 West Indies (1st innings): 191 Sri Lanka (2nd innings): 194 West Indies (2nd innings): C Gayle lbw Vaas 0; W Hinds b Muralitharn 29; R Sarwan c Jayasuriya b Vaas 82; B Lara not out 80; M Samuels not out 0; Extras (b-8, lb-3, nb-6, w-4) 21 Total (For 3 wkts, 42.4 overs) 212 Fall of wickets: 1-1, 2-50, 3-211. Bowling: Vaas 12-2-54-2, Thushara 5-0-23-0, Nissanka 8-1-64-0, Muralitharan 15.4-1-48-1, Dharmasena 2-0-12-0 Lara hammered an unbeaten 80 and Sarwan a stroke-filled 82 to complete the job begun by Collymore, who finished with a career-best 7-57 to prevent Sri Lanka from setting a stiff fourth-innings target.Sri Lanka were shot out for 194 in their second innings after resuming at 129-5, with Collymore taking the remaining five wickets for 31 in eight incisive overs to return the best figures by a West Indian at Sabina Park.Only Englishmen Trevor Bailey (7-34 in 1954) and John Snow (7-49 in 1968), and West Indian Wes Hall (7-69 in 1960) had captured seven wickets at this venue before Collymore.Sarwan and Lara batted resolutely to ensure their team did not repeat the first-innings mistakes when the hosts were dismissed for 191 in reply to Sri Lanka’s 208.The pair batted cautiously in the afternoon, but went on the rampage in the last session as they severely punished fast bowler Prabath Nissanka, who had wrecked the West Indies with five wickets in the first innings.The West Indies plundered 92 runs off just 11.4 overs.Lara began it when he hit Nissanka for two boundaries in an over and Sarwan continued it as he pulled the same bowler continued it as he pulled the same bowler for a six and two fours in the next over.Sarwan struck one six and 13 fours in his 110-ball knock for the 16th Test half-century, while Lara hit one six and nine fours in his 41st.