I have a small leak down on my # 6 cylinder due to rings. when we put oil in the cylinder the presure is the same as all the others. It has not even caused the car to miss or to have blow by yet but I need to plan for what is eventualy going to happen. the engine currently has 51k Should I just pull the k member to replace with a tubular, pull the head and oil pan yank the piston and re-ring the piston and put it back together, or should I get one of the new alluminum SVT blocks from ford made for the 03-04 Cobras? I am not looking to break the bank, but at the same time would like to get to 600rwhp