Other than Santana and Liriano (who were basically automatic wins, SP3-5 were not good in 2006. The total SP WAR for the season for that group was 11th in MLB. The BP in 2006 was light years ahead of the rest of MLB, that is what kept them in things.
Their hitting was average, but they had the league MVP (Morneau), 6th in MVP voting (Mauer) and peak Cuddyer and Hunter. They were almost guaranteed to score runs through the heart of the order. The 2006 lineup was about 10 spots higher in MLBN runs scored than this team.
The last 25 or so games for this team have been buoyed by great pitching, but also Kody Clemens and his 1.137 OPS, Harrison Bader's 122 OPS+, a resurgent Jeffers, Buxton playing almost every day, and an effective Paddack. If you believe all of those things will continue (along with Wallner coming back hitting like pre-injury, and Lewis doing something) then sure, 71 wins is possible.