PfalzPflyer

You'll fing the Saito 100 to be a perfect engine for this plane. I had a Magnum 91 FS in mine and it flow the plane very scale like. Since then I changed the Magnum 91 FS out to a Saito 91 FS for a little more power. The Saito 91 pulls this plane around with a little more power than the Magnum, so your Saito 100 will be even better. I use a 14x6 APC prop on my Saito 91 so a 15x6 APC with your 100 will be even better.

I to had to beef up the tail section on the SE-5a. All I did was install a 1/8 " piece of plywood to the underside of the the fuselage in the rear. I than drilled two 1/8in wholes through the underside of the verticale stabilizer where it mounts to the fuselage. I than used two 1 1/2" screws to secure the underside of the vertical stabilzer to the fuselage and I also used Gorrilla glue. I learned this the hard way after mine was torn off at our grass field after 3 flights.

Here is a viedo on the SE-5a flying with a Magnum 91 FS in it.

http://media.putfile.com/Jim-Flying

Good luck