I'm assuming that we're all better off not asking how you know this, unless the applicable statutes of limitation have tolled.Thats like pulling the 1275cc 4 out of a 1968 MGB and putting a worked 180 Horsepower Mazda 1146cc Rotary in it.
DO NOT DRIVE A MGB AT 140 MPH!!!
Funny part is that plane started out with a half-pound NiCd battery and 100W electric motor and flew decently (for that era) on that. It was inspired by the Astro Flight Astro Sport, Leisure Wasp, and to some extent the RCM 1/2A SST (later sold as a kit by Hobby Shack).
I still have the wing somewhere in storage, having gotten halfway through adding torsional bracing to support high-speed flight before abandoning the project.
Gave up model planes because it wasn't a challenge anymore. Can't fly gas planes anywhere near where I live, and electrics got too easy to be interesting about a decade ago.