Escort 4 speed into 105e - Tunnel mods?

Hi,
 
Would like to convert my 105e to a Escort 4 speed. 
 
Bell housing sorted, t/shaft sorted, I can convert to cable clutch and can make xmember. 
The main thing I have not looked into is physical tunnel size.
 
Is the 105e tunnel too small and need fab work?
 
Thanks,