Man sentenced for trafficking meth in Flathead and Missoula counties Missoula County Sheriff's Office Dylan Roy Mace, 29, of Missoula pleaded guilty on Feb. 10 to conspiracy to possess with intent to distribute meth. By: MTN News and last updated 2021-06-03 11:30:32-04 MISSOULA â A Missoula man who admitted to trafficking large quantities of methamphetamine in Flathead and Missoula counties will spend 12 years and seven months in prison followed by five years of supervised release, Acting U.S. Attorney Leif M. Johnson said. Dylan Roy Mace, 29, pleaded guilty on Feb. 10 to conspiracy to possess with intent to distribute meth. The government alleged in court documents that for about a year -- beginning in November 2019 -- Mace and others conspired to distribute meth.