Junaid bhai, kio sharminda kertay hain 
yes I did that, Its not comparable to you fine piece of art you have developed :), but it was like a novice try :$,
but results were mind blowing when I placed bigger engine it blew my head off! so thats why I finally decided to improve it cosmetic looks as well.. I hope you like it
here is the engine before installing it in cd-185 Roadmaster
I got this CB250 engine ripped from Honda Rebel it was scratchy from out side but from inside it was almost new, so I used it
used the clutch box tappa the old one to keep the kick intact because CB250 engine had no kick
Complter converion before adding rear seat
Final incarnation with Front / rear Disc brakes and Fat Alloy rims and tyre (a halted one becuase of business).
If you have gone through my CD 185 thread you will notice this engine in it in 'pretty clean form' after head modifications and gear box changes ...
and if you see in GPS speed forum I shared its picture of speeding the road master after engine swap and before body cosmetic changes at cieling speed of aprox ~150+kmh keeping in mind the Speedo meter error rate of -10 (a rough idea) it was still 140 and was really felt as 140+ when dragged it. 
ok I added meter pic here too .. this is the only picture I have from that time, I was not aware of Pakwheel at that time 
lolzzz... orr else I had a lot of more pics
This is my thread about Rebels and engines ever used in them :
https://www.pakwheels.com/forums/bikes-3-wheelers/203858-variation-orignal-honda-cmx-250-around-globe
And this is My project thread of Upgrading cd-185, (Project is paused these days due to my business)
https://www.pakwheels.com/forums/d-i-y-projects/118480-upgrading-your-road-master-cd-200-185-twin
