I have the same question !?
How did you fit the powerflyer with grex together

we the greeks are geeks ;-)
By the way I have in mind some mod for PF to conect WITH the grex together by extending about 10cm the roms plug by cable but I dont know if 10cm is too long for the signals.. next week I will try it..
Also i NEED HELP with software and setup of the grex and voodoo ;-)
so we can be even ;-)
ciao