mines not as fast as some .
Best of 1.42 mostly 1.44 range . Caltrac with XHD springs . Yes i would like to go split mono but budget isnt there yet and its working fine .
Yes i run radials and bracket race only so track not normally "radial prepped " . Car is very consistant good enough to win a track championship .
I believe choice is about what you want as an end result . Both can give the same result . Shocks are probably more important with Caltracs and more so with radials .

Tex