Scamp has no way of knowing the exact design and measurements of a
Perris Pacer frame. There are a lot of frame variations among the
Boler clones.
You can work directly with an
axle seller, in which case you will be responsible for taking all the required measurements on the order form. Mistakes are costly. Or you can work with an installer, in which case they will take the measurements and bear the resonsibility for any errors. If you use an installer, shops that do a lot of work with cargo and utility trailers are a better bet than RV shops. You want someone that does a lot of axle and suspension work every day.