rings for 340

I want to freshen my 340 soon. It has the 10.5 to 1 forged replacement pistons at 4.070. I cant find a file fit ring for this in a 5/64 thickness. I can find a 4.078 ring. Can I file fit the 4.078 or is this to much difference. Thanks.
Hastings Piston Ring Sets 2M139070

If it were a common 360/350 4" oversize you could get them for 36 bucks...but buick/340 mopar...51.99
I run hastings and perfect circle/mahle rings.
run a dingle ball through the holes.