89-91 Suburban Rad Support Question

[Kopper]

I'm in the process of getting the parts together to convert my 81 over to the 89-91 Suburban Grill. I called a body shop supplier for an aftermarket rad support and was asked if it was a single or dual headlight. I didn't think that there was an option for single or dual lights or the 89-91. I told him dual and received part number 92349. I called another supplier and got asked the same question. Weren't all 89-91's dual headlights?