These plans are in no way designed by or checked by a registered engineer, and I 
assume no liability for damages incurred or caused by products built using these 
plans. Any product built using these plans is done so at your own risk. All I 
know is that they are working just fine with my car on them.

These plans are to be used as a guideline for fabbing up your own stands.  They 
are good as seen, but may need to be customized for different circumstances.  

Stands: The front and rear stand themselves should be identical.  The only 
difference being in the mounts themselves.  The tubing I used was 1/8" thick.  
And I ground all the welds on the bottom of the stands flat so they would not 
rock back and forth.  Also, pre-drill all your rotation locating holes in the 
pipes before you mount your car.  A 3/8" or «" bolt 4" long works good as a 
locating pin.

Rear Stand Mount: You will need to make an accurate measurement of the mounting 
holes for the rear bumper.  Drill the holes into the mount as precise as you 
can.  I used flat bar for the long piece of the mount instead of angle because 
there is a slight bow to the back of the 240Z's and I didn't want to make 
spacers.  It holds fine as is, but don't compromise on the thickness of the bar.

Front Stand Mount: The length of the long bar is 30" +/- ¬".  You will need to 
verify this on an individual basis.  The 2" x 2" angle iron needs to be at least 
4" long.  This is where the front mounting holes will be drilled.  There are 
threaded mounting holes on the bottom of the core-support where a skid plate 
attaches on all Z's.  Use these holes for mounting the front mount.  You will 
need to make an accurate measurement of these and drill them into the mount as 
precisely as you can.  The 2-1/2" pipe needs to be longer on the front mount 
than the rear mount.  This is to accommodate the extension off the core-support 
where the grill mounts.  Figure on this piece being a minimum of 10" - 11" long.

Notes: The two stands can be tied together or left free standing, independent of 
each other.  If you decide to tie them together, you will need a piece of flat 
bar or angle that is about 12' long.  If you weld them together, you will have 
to cut them apart for storage when you are through.