After having many of my own cars setup and tested and driven yes i do know from testing and research i have done. All of my cars have been setup at elite in rainham where i have many many sheets of data and why my RS2k with a Turbo engine and also my fiesta RST didnt handle once i lowered the ride height. The reason was due to the wrong length of front TCA/Wishbone setup! If you could have some made to do the correct job this would fix the problem but like i said about custom parts. Also once lowered the angle that the wishones are mounted at are at the wrong height to start with. As for the rear end compared to the maxi type then it is a whole different setup. The rear beam takes into account the right caster camber etc. as it uses cosworth rear hubs (similar) you can use all cosworth stuff. However the rear beam will cost around £750 without any of the parts to make it work which is an extra cost.

Now i have a cosworth with full 909 adjustable front and rear end which costs over 4k to sort the problem out that the std cosworth has, hence the reason that there are companys even on this site that offers the modded rear beam to sort the problem out.

Thats why you cant lower the cosworth and put massive wheels on without losing the handling.

Anywhos hope this helps you understand the problem with the beam and wishbones that some fords have.

Danny.