To finish the story...

Had an "electronic" wheel alignment and to-out was close to my home spun job and steering wheel is dead centre. With all new rubber bushes on radius arms front and rear axle, new "straight" rubber bushed panhard rod and the new Michelins it's riding and steering straight, can even let it steer itself made on the freeway for 2 secs. The new radius bushes seemed to have made the biggest difference to feeling more planted and no creaking with suspension movement nor when braking. I find new tyres also helps smooth the driveline, ? maybe balances the front and rear wheel drive more closely. Might next invest in a new set of Bilstein shocks as existing have done about 130k. Thanks for everyone's wisdom.