swaping a YFM 350 engine onto a YTM 225 frame - ANYONE HAVE ANY INFO?

[MATTICUS]

I recently purchased a pair of 1984 YTM 225 three wheelers. One is in great shape and the other complete but engine locked up. I been eyeballing the 350 cc engine on my dad's moto 4 and it looks like one might fit on a 225 frame. Not really sure but I think the rear swing arm will have to be swapped as well. I even checked the mounts with a tape measure and they looked pretty close. If anyone has any information on this I would appreciate the help. Below are links to pictures of the trikes.
http://www.facebook.com/home.php#!/p...00000710377593
http://www.facebook.com/home.php#!/p...31726853527660

[3wheelmecca]

Just get all the measurements, and do a mock up. It may be time consuming, but better than chopping up the frame to get the head in.