Thanks guys for your insights. I do want to be fair though. I have two GSP Sukhois that I love. Both have adequate sub-structures, that is why I did not question the construction of their 66" Cap 232. I simply found it amazing that Irwin and his company would expect me to rip open a new product to add the required sub-structure for minimum safety.

I for one will not purchase from him again after the response I received. I am not bad mouthing their other products, because like I said, I love my Sukhois. But I am a better than fair builder and love building, but to spend decent money on a plane I must rebuild from the box doesn't seem wise. Thanks again for your responses to this post.