mount bolts
That makes it somewhat easier. I gave the shop owner three lengths of grade 8 bolts; 2 inch, 2 1/2 inch, and 10 count, 3 inch bolts, nuts and washers.
With this selection, I'm hoping they work. All diameters I gave are 3/8 inch.
I know originals are metric, but I think they are very close to 3/8" diameter. I'm hoping someone will verify if grade 8's will be sufficient. If not, time to buy again.