cylinders for the ht motors

just seeing if anyone has any burnt up cylinders old ones they are throwing away im trying to design a port stuffer to lower the exhaust port fixing it to the exhaust manifold im going to try reconfiguering the entire cylinder port configuration i stumbled across something the other day and i think it would be benificial to the performance of these motors im ready to start cc'ing these things id like to see 8200 reliable rpms with good bottom end but i need old cylinders to do the math. donor will be greatly appreciated i will pay shipping cost thanx! SKIPU