Everyone I've heard talk about the AP had said the same thing:

It runs well, is easy to get working right, and so on.

But it's under-powered and not competitive, even in SSC. Sorry.

There seem to be 2 tried and tested SSC engines, and a 3rd that apparently has promise.

The OS .15LA and the Mag .15 seem to be about equal in SSC. (The Mag is more powerful in A class, with a different prop though)

The Megatech .15 may have potential, but it's too soon to tell.