[TR] TR4 suspension mods

[dave]

I have an early TR4 (built in 62, titled in 63) with lots and lots of
interesting mods.

 

The original purchaser also owned a flaps and did all sorts of things.  He
also ran the car in lots of rallies, and there are a few unexplained holes
in the dash.

 

He sold it to a college kid, who drove it until it needed an engine rebuild,
and parked it for a couple decades.

 

I have resuscitated it, and have constantly run into things that are not
stock.  

 

Here is my question - we are rebuilding the front suspension, and discovered
(after I had bought the "correct" parts, that the upper control
arms/wishbones and the ball joints are TR4A.  I think the vertical control
arms are TR4; we putting in TR4 trunnions.  

 

Can anyone explain to me the advantage of this?

 

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