Arrow is know known as Prefix (248-650-1330)
https://www.prefix.com/performance/#Parts
They show the block as sold out.
https://store.prefix.com/products/he...afb2aeaf&_ss=r
There are three blocks, Larry do you know which one you need?
Part Finished Max. Bore Crank Cam
Number Bore Bore Honed Honed Bore
P5153897 4.055 4.060 Yes Yes Std.
P5153898 4.114 4.185 No Yes Std.
P5155507 4.125 4.155 Yes Yes Std.