i had a homemade 175 gm ,100 cm wing span, 90 cm fusilage aeroplane & wants to make it an 4 chanel rc plane .please tell me its components with their specification sutable for it..

hey sachan! welcome to  RCIndia!
if you are new, then why don't you start from here?

http://www.rcindia.org/rc-india-forum/the-rc-india-gems/

Welcome to RC India

Please do not use "need help" as the topic name.  I have changed it.

http://www.rcindia.org/rc-india-forum/how-to-make-a-new-post-on-this-forum/

Most likely, all the information you seek is already on the forum, so please search and do more research here before asking further questions.