leak off non banana?

[snowballer]

I have a s reg transit minibus,firstly how would i tell if the leak off mod is already done,looking at the engine its the non banana type i have air filter on top if that makes sense anyway looking front on i see the the engine has pipes leading to the first injector and on the fourth injector it has a nipple so is mine done or do i go ahead and do it
next the egr how would i know if thats been done ?i have seen some threads but they dont look the same as min mmmm

[Backbone of Britain]

If the blanking cap is on th injector furthest away from the bonnet the mod has been done.

[snowballer]

yes it is so one job less,how will i know if fuel pump has had the mod done thanks
Also the egr mod is it in an obvious place i could easily see or do i need to remove the air filter complete novice.
Need a bit more power on hills seems like i have to give high revs in second then in third it slow going, i know i have a fair amount of weight with seats in thatbut what's it going to be like fully loaded,i dont think they will be happy with jumping out and pushing hahaha