lacks power its takes two to three minutes to get to 45 mph?

This would be considered low power and can be caused by a number of things. Here are a couple guides that will help get us started:

https://youtu.be/U1RoG3I-Oww

https://www.2carpros.com/articles/symptoms-of-low-engine-power

Once we know if there were any issues with this, we can take the next steps which is checking exhaust for restrictions.

If the converter is clogged, then it will cause this, and it may improve as the engine gets hot, but we need to check the converter using this testing.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Once we know what we find with this info we can go from there but basically the leading causes of low power are restrictions to the intake or exhaust, so we need to start there.

Thanks