Schwinn Sting-Ray Mounting Question

[KiLlEr_MiKe420]

Well i just bought a Schwinn Sting-Ray motorized bicycle that has what i hear is a 49 or 50cc motor. Well it seized up so im buying a new one but i was wanting to put an 80cc motor on it but i cant find any that match the mount that is welded on the frame. So my question is does anyone know about an 80cc motor that would fit the mount on my bike

 

[Bike Monster]

what is your mount????

 

[KiLlEr_MiKe420]

im not sure the guy i bought it from didnt tell me its just a flat mount welded on the frame i dont know if it s a u joint or not

 

[azbill]

a pic will help us help you

 

[KiLlEr_MiKe420]

there is a pic of the bike in my album but i havn't had the chance to take any close up photos of the motor or anything yet