273 302 318 340 build

Thanks, it may be thinner than the one I used on the 273 I used Felpro, can't remember which one.
Im not sure whether I will use this 85 318 in the cuda or not. At worst I will put in my 84 1/2 ton.
Thanks
Steve
Would this head gasket have been more helpful for you?
https://www.summitracing.com/parts/mrg-1121g/overview/make/plymouth