A customer I met over the winter tried tubing his block and ran into issues. It’s not a fun job and I’ve done 3-4 of them. It costs me the price of two 10 inch pieces of 1/2 inch house copper waterline. He got frustrated and his local shop is bushing his block for I think he told me 450.00-500.00 which is cheap compared to the 600.00 plus I’ve heard. I have a block sitting here that my son ran 6.54 in and it needs tubed. I’ve been pushing it from one spot to another. I used smaller stainless tubing in the block I’m running now and I won’t do that again.