I don’t, while I think it would be nice to have one I think these people are nuts that try to sell them for the price of an aftermarket block. Biggest thing if you’re going to make a ton of power is just find a block with good thick cylinder walls and add caps. Preferably alum if you’re really going to get after it (big compression or N2O).
These blocks are available between 900 and 1400$ depending on shape and if there are caps or not. I will not use factory caps anyway so i could just but a bare block that can be bored to 4.375 hole.
Aftermarhet block is wayyy more from what i have seen?
I dont really want a ton, I plan to make over 800 n/a and over 1100 with nitrous. Its a street car mostly :-)
I was thinkimg to use milodon steel x bolted caps and some hardblock as dampening material. I use halp filled block on the street without any issues.