Originally Posted by SS Tim (Post 5798925)

RogerKoop Should still have some left.
http://67-72chevytrucks.com/vboard/s...d.php?t=557195

Originally Posted by 29od1 (Post 5799162)

Koops rear outer driver's side bracket won't fit if you drill the driver side 3/4" over from the front outer most hole. It was off by about 1/2" from where my bucket seat tracks holes needed to be drilled. It needs to be in the 1-1/8" to 1-1/4" over if measuring center to center.

Can someone with buckets in a truck please measure center to center the distance shown in this picture. Or maybe Koop can answer how far he moved his over.

Thank you.

Originally Posted by RogerKoop (Post 5826319)

I took some pics of my 1972 C30 which has 44,000 miles on it which has factory bucket seats in it. Like this truck and all the trucks that we have seen bucket seats in, none of them used the bolt in the support that runs underneath the floor.

The front bucket mounting just used a square nut welded to the floor. No additional floor support brackets was used except for what was used for the bench seat. I will take some photos of the front mounting and add them later

As for the offset on the drives side front holes I found it to be 1 1/4" to the left. See photo.

Originally Posted by 29od1 (Post 5830211)

Just to add a bit more, the truck I looked at had the bolt through the fore/aft floor z-shaped section as you can see in pic one.

The other pics are of the front mounting nuts from under the truck. Pic 2 is of the inner front drivers side. Pic 3 is of the inner front passenger side. If you don't have the formed z-section reinforcement that runs from side to side (which only comes installed on factory bucket trucks and Blazers), you'll need to fab something up like mcbassin did in his install.

The last pic is of the original mounting bolts and a vintage koozie that was under the seat.

I hope this helps everyone out and the major parts of this thread would be great to put in the FAQ section. Thanks to mcbassin for starting it and everyone who contributed!

Originally Posted by 73737373 (Post 6723526)

My truck is a 1970 originally equipped w/factory buckets so it already has the holes in the right places. The bad news: factory buckets are long gone. The good news: I have a set of Blazer Sport buckets. Will the Blazer buckets bolt-in directly or will modifications need to be done? Thanks.