Ive got a drop bar touring bike and a trekking bar MTB, also a touring/trekking bike , (the latter gets more use)

to do the MTB to drop bar switch, bars, brake levers m bar end shifters , the cables to hook them all up and new housing

The Stem reach as is may not be right , either in height or reach .. and few Road bars are 1" centers ,so whole handlebar assembly

stem and all would be pulled set aside and starting over is the needed path .. .