If this is a once-in-a-lifetime build do it right and spend the extra couple of thousands for a block that won't break. There are plenty of posts on this topic.
Most aluminum blocks have cast iron cylinders so wear shouldn't be an issue. And even the OEM blocks with spray-in liners have to last 100K or more.
R.
I don't know if it's going to be a once in a lifetime build, but it is probably going to be a once in 10-20 years build. I will probably go with the aluminum block. The question about boring out the cylinders remains though, if I have to do a little bit of boring for the stroker kit, will there be an issue with the cast iron sleeves of the cylinder being too thin?
