Convertible top boot

[Oystercopy]

Hey guys.. so I'm finally getting around to putting the snaps on my convertible boot. I bought this boot new about 5 years ago, but never went through with the snaps nor put the corresponding holes in the convertible panels to utilize the snaps.
Does anyone happen to know, is there a "spec" for the spacing of the snaps? It looks like there should be 3 per side/flap but I didn't know if there was a measurement of any kind to use? I've attached a pic showing the items I'm needing help getting the measurements for, if there even is such a thing? Thanks in advance!
OC

 

[Cuda_mark]

Are you interior panels the Palco ones? I didn't realize they didn't come with holes for the snaps.

 

[Oystercopy]

Are you interior panels the Palco ones? I didn't realize they didn't come with holes for the snaps.

You know, I'm not sure what they are. My door panels are "Dash Top" brand, only because there's a sticker on the back of them. The convertible panels I don't know, but no, they didn't come with the holes already drilled for the snaps.

The boot itself is from Legendary.

 

[340challconvert]

Hope this helps from my original convertible boot and inside rear quarter panel;

 

[Oystercopy]

That's what I needed... Thank you guys!!