rear upright book dimensions
 

I've knocked up a jig for the rear uprights out of timber. Seems pretty good but not sure the books got the right dimensions in it.

fig 5.26 (page 70-71) shows the height of the bush hole as 62mm from the base of the jig. and thats what I've done. However that makes the shock hole much higher than the 66mm shown in fig 5.24. By my calculation from fig 5.24 the height of the bush hole from the jig base should be 58.2 mm not the 62mm shown in fig 5.26. Am I missing something?

Not sure about the dimensions but would be keen to see a pic of how you have done the jig as that is one of my next Jobs !!!