Solid leaf spring bushing size

I was thinking about replacing the stock rubber leaf spring bushings for solid ones but not sure of the size. I have seen 1 1/2" and 2" what size comes on Super Stock springs? 65 Coronet

The factory size is 3 inch, and solid will not give a good ride, go with a polyureathane.

strip car only. not concerned about the ride

Have you check summit or speedway motors?

I've been wondering the same thing.

You see 2 different sizes
w/440/426
without/440/426

But what size are the Super Stock spring fronts?

I'm thinking it's the 1 1/2" size since that's the size of the Mopar solid bushings.
The other difference is I believe the bolt is 5/8 on a B body and 9/16 on an A body. Can Anybody verify that?

EDIT:
Looks like the bolt is 1/2" or 5/8" on A-Body cars

Suspension.com has the following note on spring bushings:
(26)
1.50" main eye
order this part number if your car was an original 440 or 426 car from the factory, or you are using 'Super Stock' rear springs with 1.50" front 'Main Eye' spring eye."
and
"(26) With factory 426 and 440 models and super stock springs. Super stock springs have a smaller diameter front spring eye than the small block cars."