you can avoid machine work by using the CC beehive springs and retainers. they will be good upto .525. but for the price of the springs, retainers, and locks, your at about the same as the machine work. and then run the 1.6 roller rockers.
you can avoid machine work by using the CC beehive springs and retainers. they will be good upto .525. but for the price of the springs, retainers, and locks, your at about the same as the machine work. and then run the 1.6 roller rockers.