BM bolts

[27Skulls]

Body shop is going to install new mounts to all but #2 position. Where can I find out bolt size-length to #'s 1, 3, 5, 6, and 7? I've ordered new #5 from one of our vendors and I'm sure they just screw in place.

 

[87 national]

1,2,4,6,7 bolts are all the same length so just measure the bolts you have. Number 3 takes a shorter bolt not sure of the size some one will be able to help. Also number 5 is the gnx bushing and when i put mine in i didn't have a bolt to use.
kirban sells a kit
1984 1985 1986 1987 Buick Regal Grand National Turbo T T-Type GNX FACTORY STYLE BODY MOUNT BOLTS (12) KIT

 

[27Skulls]

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.