13b 4rotor with 26b part?
 

Hello everyone, I'm looking to buy one rx7 fc and I want to learn how modify them after some research i found this kit "Precision 26B Starter kit". I heard that the 13b ,20b and 26b was close to be the same engine with just more rotor. So do you think I can take this kit with two 13b and everything gonna fit? If not what part gonna cause me some trouble?
Just for clarification I just want to know if I can make the motor. The question of the engine bay space, exhaust, etc is for another day.
please don't be too hard on me I know that can be a stupide question but I'm new in the rotary world and I'm only here to learn.

wrong section. u will need to post a want to buy in the marketplace once u meet the min requirements to do so.