Wouldn't loosing the TCAs in favour of 3 locating points at the bottom end be good for big power Mk3/4s as it would make them a lot more stable under hard acceleration in particular...?
Just to add.
The TCA setup that is used on a Mk3/4 Escorts and all Cosworths, are great! Buy some adjustable ones or make them your self and you have a solid and reliable TCA setup. The bushes last a long time, the TCA's take alot of abuse.
Compare your running gear to a Race or Rally car.
The TCA's used on a Grp A Cosworth are rose jointed and adjustable in situ, they also have drop link bars attached, which in turn connect to an ajustable rollbar. This setup is the best you could expect and works 100% it is the same setup you want to implement.
NOT a mk5 escort which was built for going shopping in, what would you expect from its handling? Its a fact that the wishbone setup on late fords are the worst design made by them for years.
XR2i
FRST
Mondeo
Escort Mk5/6
Fiesta Mk3-5
All have the same setup and generate alot of money in spare wishbone parts sales for Ford.