I might have a set of h&r coilovers and bars available if you’re interested ?
I’m still unpacking parts now I’m going on my 964 project , but have found one front and one rear and a pair of anti-roll-bars upto now ..
Pm me if interested and I’ll let you know what else I uncover .
IMHO , the full h&r kit is bordering on the extreme for a daily driver even using all factory rubber .
A lot more control and a better set-up than the trusted bilstein/Eibach or bilstein h&r combos , but the bars make it a little too much for my liking . ( I’m old btw )
It’s a definately improvement on bilstein/h&r 965 springs which is pretty hard to beat for a fixed-height street combo on a stock car .
Yet it offers no adjustment on the dampers for track use so ch2anging springs to the extreme is out unless you send to bilstein for revalue . *
Allthough the balance and anti-roll are adjustable , which is good as that’s more than enough to play with
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Like lots of porsche Oem parts manufacturers , the big players in Europe all get along . (Your m-option will be eibach or h&r etc)
So h&r height-adjustable are modified bilstein dampers , and can be serviced/valve at bilstein Motorsport centers .
At least in europe they can , but better check over in USA ....