Elation Models in the UK do one, its approx. 69" in both directions if I remember, and 9lbs give or take a bit. It was intially intended for 1.10 use, but a YS1.40FZ was found to be perfect with proper use of throttle
Apparently a bit over 8lb with the lighter motors:
http://www.modelactivitypress.com/ami_framesetpl.htm
I think it would be a bit too heavy for a 90, but any of the older 120-140 size motors would do very well with it.
Mark