TheCollector

I might need new rollers for my engine its ticking so i might as well upgrade a bit im trying to figure out what kind are good like aluminum or steel? will i need stud mounted ones or pedestal mounts? will i need to replace my lifters as well or my valves? i know that 1.6 is the normal ratio id like to get 1.7 for more air and exhaust action but not sure what size and style that will fit my engine.

Ive done some Google time and i think they are stud mounted and 7/16ths are the size of the stud is that correct?