machine work questions.

Well my 400 block got a clean bill of health from from my potential builder today (local vendor my company does work with)
The block is 60 over but has plenty of wall. It will be touched up with the hone for the new slugs (from cast to forged). Here is my issue.... the guy says we dont need (nor does he have) torque plates for the motor. I am nervous. This will be a healthy stroker street build and I want to get it right. Should I send it out for the machine work to someone who has the plates? Will the 60 over make a difference between honing with or without the plate?