So you have side AND top posts on your 78 series battery ?.

If it's like above and the top terminals are molded in, you "might" be able to cut them off flush or if it's setup with bolt-on type of top posts like I've seen on some, those could just be unbolted and removed.

If the top is not real flat to give solid support to the topper cover, then maybe fab out some plastic spacer strips and glue them to the underside of the cover.

I know when I put a fake cover on my 68 Chevy II Nova with the top posts, I had the cover in hand and THEN shopped for and bought the battery that fit the best under it. I then only had to do minor top post hole fitting to get a real nice fit.

Chevrolet Battery Topper Installation and Fit

I bought a GM Restoration Parts Battery Topper Cover for use on my 1968 Chevy II Nova. After I got the topper I bought a battery that fit pretty close but needed a little tweaking. I had to move the holes apart a little bit and also enlarge them. I got it to fit a lot better than the ones I had...

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Jim

 

I thought a 68 Camaro came with an R59? You can get a nice AGM battery labeled R59 with the Delco brand and eye etc and not have to deal with a topper if you want it to look original. I use that in my pace car and have had about a 10 year life out if it before replacing with the same style battery.

 

I took apart one of the reproduction batteries and turned out to have an Odyssey battery inside:

Delco Reproduction Battery with Odyssey Battery Inside

Reproduction Delco Battery with an Odyssey Battery Inside (part number 0765-6028).

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This one had the caps that came off and luckily no one ever filled them with water or acid thinking it might be like an original one. That might have had bad results.

Jim

 

Thanks for the replies. I already have the 78 series battery in place and was looking to dress it up a little. Thought they might make a topper for it.