I've had 2 of these. The first flew for 3 years as a PT-19 with a G-23. Flew fine, but very deliberate. Rebuilt it as a PT-23 with a US 35cc. Flew for another 2 years. Built the second as a PT-26 with a G-26 spinning a 17x8. This I feel is the perfect engine/prop combination for this plane. I added flaps to this plane as well. Unfortunately I hit a tree in 2007 with this plane and haven't had the chance to finish the repairs.
Good luck finding a canopy for a PT-26. I finally gave up looking and made my own. It's a simple canopy and isn't too tough to make.
It also worth looking into the fiberglass cowl available from Spychalla Aircraft for this plane. Leo's glass work is beautiful and he incoporated a little more scale shape into his cowl. Worth the money in my opinion.
Here's his website: [link=http://www.spychallaaircraft.com]Spychalla Aircraft[/link]