Hello again,
The L300 front end was pulled out and spun around to give original front steer maintaining correct ackerman geometry. I found that an early torana(LH) rack was about the right size so that has been welded in. Took second attempt to locate it at correct height and square to the front end to give me required bump steer measurements. I had to machine up a copuple of extensions for the rack ends. I have noticed now though, that after fitting the rods that brace back to the chassis, that the bump steer measurements have changed a little, so may need to adjust the toe in/ toe out a little more to re-correct that. Have any of you retained the original l300 springs, they are rather stiff. The torana springs look as though they will fit, about 3mm coil diameter increase and more compliant. Guess the best thing to do is fit the springs , then the engine and see where it all sits and then get some custom springs made. Thank you to all those people who have offered support. Much appreciated.