Cover Plate for SBM 904 Transmission

If you are going to run a 10 inch or smaller converter your 727 cover will rub,Yours has the narrow travel passage
I do not know what the travel passage is?
I may have made things confusing (at least I am now unclear) because I have two separate builds in my garage or in my head; 360/727 and 318/904.
If the above plate is for a SB/727 and I know the inspection cover on the left fits that plate, will this cover plate and the inspection cover on the left have rubbing issues on the 360/727 build?
I know the inspection cover on the right is too small for that plate, but assume it will fit the plate meant for a 904. No?.