Following on from our “Frankenstein 2J RB“ a few weeks ago, we flew to Adelaide to speak to Darren from Bullet Race Engineering about what makes a billet engine better, and at what point you might consider one over a standard cast iron block. While we were there we got a factory tour and watched some billet 4G63's being milled up. Huge thanks to Bullet for taking the time to show us around!
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