OK, let's play that out. Last year their returning starters placed DNP, 5, 3, 3, 2, DNP, 1, 4 (up a weight), 1 (down a weight), 2.
This year you have them DNP, 3, 3, 3, 1, 5, 1, 2, 1, 2.
They return 136.5 points and you are calling for 142.5. Perhaps a bit aggressive, but certainly not unrealistic.
Last year their returning starters had 20 bonus points. With the added points per takedown they would have had the 10 incremental bonus points (0, 0.5, 1, 2, 2, 0, 1, 1, 1, 0.5).
That puts them at 172.5. So, yes it is possible.
But is 170 really the number? Or do we rescore the Iowa total using the current rules? If so, it is 170.5 (unless it is 171.5, see Note below) Probably not, but I think we should even if I am sure to be in the minority here.
NOTE: Back in May when I rescored the 1997 Iowa team using 1997 scoring rules I came up with 171, not 170. I asked if anyone knew what the difference was attributable to (did I make a mistake?, was there a team point deduction?), but no one seemed to know the answer, or at least no one I asked.