Another grill swap question

[Short 3/4]

I have a 65 K10 that I want to put a 60/61 four lamp grill on, cuz I got one for free and I think that’s the coolest looking one.

I don’t have the headlamp buckets and brackets yet, but looks like all the usual suppliers sell them. After reading the previous thread about the GMC grill swap I figured I’d hold up what I have to see if everything lines up. Looks like other than drilling a few extra mounting holes everything fits fine…BUT…I noticed there is an indentation in the grill support panel for the single headlight buckets and am wondering if that indentation is different for the four lamp 60-61, or for that matter for a four lamp 65 GMC grill.

I know lots of folks out there have swapped out grills and just wondering if this is all going to fit.

Thanks
Tom