Would I need to do valve springs and other modifications or is it fine to run the 1.9 rockers without anything else done on my VT Commodore?Will this make it drive as good as a alloytec or would I need more mods if so what?
Given the number of ks the car has done, it would be a good idea to replace the valve springs and retainers at the same time.Depending on the modifications, it should drive better than an alloytec.
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