Its in step 5 - seems like if you are installing the newer merc made 6.2 and 4.5 engines you dont need the spacers. If you are installing a 8.2 (assume GM based) or legacy engine, which I suspect is any of the older GM based 4.3, 5.7, 454 gm based engines you need the spacer...
Ayuh,..... No kiddin',..... I've always just hung the motor, dropped in the rear bolts, slid in the alignment bar, 'n drilled the front holes,....
Yep that's how I did my previous 1979 scorpion.
Yup I seen page 4 where it talks about using the spacers.. but it doesn't list the spacers anywhere that has the tool available to sell so I was thinking the tool in the installation sheet may be a newer tool and and the was hoping the spacers where not required for the tool I have .
This will not be the alignment stage. I am replacing a 3.0 with a v6 so this will be for getting the engine beds right. It's alot easier for 1 person to manage a 20 pound tool then it is to move an engine host around with an engine on it in the dirt if you know what I mean ...
Yeah I wish I had access to the stringers on both sides but it's a finished deck and no way to access the back side of stringers unless I cut access holes in the deck and dig out some foam..
Ayuh,..... Cut hand holes in the stringer,..... They'll be hidden, no covers necessary,.....
Ok wasnt sure what your question was. Looks like you were sold part of the tool … looks like those spacers are 1/2” or so thick. Would think you could determine the thickness off mercs installation drawings. They are available on line https://samerwebapp01apncus01.azure...e-9186-4ce3dfaead13/43lefialpha_1996-2001.pdf
Ayuh,..... Plywood oughta work,.....
Agreed no need to over think it
I would take that as almost a half inch. Or 45 caliber..
sorry mu goof 
yes almost half inch.. I swear I had it right in my head ....