Piston Rings?

Hi Guys,
i´m in need of help here. I got a good deal of a Stroker kit 451.
Has got K1 con rods and a Mopar forged crank and Arias Pistons CP 4314.
now, my problem is, the Pistons measure 4.380 on top, down low 4.385. So i guess these are for a 4.385 bore?
My problem are the Rings. They are 0.043", 1/16 and 3/16.
But i cant find any supplier who has Rings in this Boresize...

Anybody know someone who make custom rings? Affordable?
Don´t want to pay 500 bucks for rings.

Thanks!
hughs engines -------------
you need to learn where u mike pistons .