Maybe....
Take Ventus CT and:
Change solo engine fro a single carburator to 2 carburators for max thrust-possible
Add throttle lever in cockpit-difficult
Start engine with a rope start or hand starting-maybe ? possible ? not easy
Jump into glider and takeoff-looks easy but..prop not efficient for low speed, very very long ground run, very low climb rate. Do you have a test pilot rating ?

To change CT engine to CM engine required a new pylon, larger opening in fuselage, add throttle lever in cockpit. Very difficult

Dan