I have been looking at them or EF planes to convert over. I did a early Fliton AJ slick 48" span to fly with Saito 40 and it was a great flying plane. It came in at 52-55 ounce if i remember correctly.

PA's biplane would be great with a Saito 40a

I am leaning toward the EF MXS though much better looking to me as the PA planes just dont have great colors although different.

Here is my thread:

http://www.rcuniverse.com/forum/m_9477626/tm.htm