Its a power steering set up and does make for a tight fit... but if i move the engine back a little its going to improve clearances on No.4 port which is the one thats got the least room .The lower control arm pivots are mounted about 40mm lower than std and have some flimsy looking brackets bolted to them and the cross member which i will need to replace .The main problem looks like the inner tie rod ends which will just touch the cross member if i place it in its original position .
I'm going to have to trial fit it to see how close it really is though.
From memory the falconparts.com site has some tech info that states that your "A" dimension should be 11"
I Read a post at TFFN where that measurement was mentioned. (I think its taken from the cowl not the edge where its spot welded to the fire wall) but it varied a couple of inches in different cars depending on where it was measured from and how the motor was mounted.
I get 93mm from the center of the back drivers side inlet manifold bolt to the firewall at present