Help with rad.support bolt locations/shock insulators

[455 Regal]

Guys, I need some help!

I am taking my car back to the stock cooling system. I bought a new rad. & a rad. support. I need the following info/confirmation please:
(1) There look to be 5 bolts that hold the rad supt down?
(2) One of the 5 bolt holes looks like it takes a fender-style nut under a big hole in the core support?
(3) What the heck thread-size are the other bolts?!
(4) Does the rad support use 2 or 4 shock insulators and where do they go?
(5) How many go on the floor of the core support and where do they go?
(6) Who sells the shock insulators new?

Pictures might help for #4 & #5.

I'm getting to the end of my rope with this car...

Thanks much.

 

[turbofish38]

Yes 5 bolts holding the top plate down. All are 6mm-1.0 thread. Use a M6-1.0X30 loose washer hex head body bolt. One or two holes may need a j-nut. 4 insulators. The two big ones go between the frame and support, the 2 small ones go on top of the support. They go through the square holes on the frame. New parts are available at a GM dealer.

 

[Ormand]

You can find pictures, and parts numbers, and sometimes more info, here:Buick Parts Catalog

 

[455 Regal]

Thanks.

I wonder if the core support from an '81 Regal has metric or SAE bolts? Maybe that's part of my problem not being able to find the right bolts in my "coffee can organizer".