Hello, update the block is having the non-lipped sleeves cut out and new lipped ones installed. It has been at the shop for over 4 months. They had a change in ownership and had a massive backlog. They have ordered the sleeves now and hope to have the block finished by the end of this month. Once that is done it will be line bored and the deck height zeroed again. I am looking for short skirt, floating, flattop pistons for Blackenstien. I might have to order custom rods to keep the compression ratio between 11 and 12 to one. Minimum cubic inches should be 301 but might be able to up it to 326. Looking at GNX pistons as they have a tad less compression height than the Chevy 305 or oversized Rover pistons. The Rover pistons also have a very long skirt. I'm using .050" thick (when compressed) head gaskets. Still deciding on cross drilling the mains and if I should have it offset ground for an additional .010" of stroke. Once they determine the actual deck height they will balancing the crank and the 2 flexplates with the adaptor I had to machine due to the 1/2" extra length of the 300 crank.