Beam....

[flat]

Chris,

Alex is right on the money. Stock torsions and good shocks.

In general you want soft suspension and firm valving. Think about it, if the wheel doesn't stay on the ground it's of no use and dangerous. A soft spring insures that tire contact is always maintained. Too stiff a spring and the wheel looses contact and problems arise...especially in corners. Pick up a couple of Carroll Smiths' books, they're gold. I can lend 'em to you if you wish.
In general I find the softer I make the suspension on my rides, the better it rides and handles...maybe It's just the old man in me talking...

Lanner

[evilC]

The general consensus is to keep the standard torsion bars at the front but control the movement with poly bushes and Bilstein (preferred) or Koni Red dampers. Go with the Chapman principle of "soft springing stiff damping".
With regard to heim rod ends use M14 Teflon lined and it may be worthwhile adding boots if it is really dusty. Use M14 12.9 bolts with a plain shank - length cut to suit. Ream out the tapered hole to suit the shank.
I used the original tie rod threaded ends sweated and welded into a new 1/2"x1/8" CHS. It now looks about the right size.

Clive