belltech c-section part number + more

I ordered a c-section kit from summit, ended up being a section and relocator kit for a c-10.

I called belltech and the tech guy said I need part number 6611, everywhere also says this is for a c-10 from various years. 6911 says it fits later 3/4 tons and 1 tons.

Truck is an 87 R30 non-dually (former railroad truck) I've already got my spindles and relocator kit, just need this straightened out, and if anyone knows off hand a shock part number.

thanks,

Russ

Well 6611 also wrong. Ugh.