According to the formula I have been given ( mphxgearx366/tire diameter)
at 60 mph you will be pushing 3400 rpms.
Horse-power band on the 1.6 16v is about 2800-5200 rpms give or take.
Generally you want to fall between 60% and 80% of the powerband. So yer barely in the range you want to be in HP wise @ 60 mph. At lower speeds yer going to be below the power band so you will experience 'sluggishness' comapred to stock Sidekicks because the torque output is also in the higher rpms.
So to answer the question, you'll be a little slow from stop sign to stop sign, and on the highway you'll be pushing 4300+ rpms to do 75mph, but driveable in my opinion.
Hope this helps.
Neal the Zukiguy