Make sure you buy quality barrels. The wheel industry is full of junk with great marketing. Theres a few barrel companys i could list for you but most of them are wholesale only. You can try contacting thatcher at independant wheel and if you give him your inner bore of your barrel and tell him they are 40 hole and he should be able to get them made for you. Being that they are 40
Hole i assume they are standard sizing like forgeline hre iforged etc . Theres step lip and rolled step lip. Yours are the regular step not rolled step so confirm that your new ones will ne the same. They fit the same its just a different type of edge. I rebarrel all my own wheels and have done a few sets, its actually fairly easy .just make sure you use a neutral curing silicone and clean everything like you will be eating off them and torque the bolts to spec.
Make sure whoever you use does good work. Ive seen many "professionals" do poor work.
I cant vouch for these guys but wheelflip.com and threepiece.us both offer barrels for retail and rebarreling if you want them to do it.