"The Darton Pro-Sleeve Kit is available for many series of 4, 6, and 8 cylinder import and domestic engines and provides for maximum bore sizes and boost potential. The benefits of our pro-series kits are:

Improved block integral strength
Improved cooling
""Wet sleeve"" replace-ability
Increased horsepower output potential
Superior oil and compression control
Street or strip application
Kits can be installed by your local machine shop
Full installation manual with every kit sale
High boost and horsepower potential
Superior cylinder sealing and ring wear
Bulletproof Darton ductile iron
130,000 psi tensile strength"