Cowling dimensions TWM At-6 texan 1/7
 

Hello folks! Like the title says i need to get hold of the inner diameter of the enginecowling of the 1/7 TWM texan. I would really appriciate if someone could help me with that. I'm planning on putting a Saito 120 r3 in this model.
Also if would be nice if you could share you're general thougths about this model, is it a good flier for someone like me who have approx 10h of low-wing flying experience?

thanks!

Victor