I have no clue with regards to this chassis. You can try the following . Also I don't know how much u are going to spend or willing to spend.
1. Increase servo horn length. I don't know how much space you have at your servo or if your current steering system allows more turn.
2. You can extend your steering wipers. It's not that difficult. Just need the right material and cut it to size. Some people were using some plastic parts from the tamiya mini z as steering wipers extension. I used plastic curtain rollers.
3. If you want to spend loads of money and drill a lot. You can change your steering system. Depends if your chassis is worth it or not.
4. Swap front lower arms for y arms. Most y arms are the about same length. M3 holes, you just need spacers to tighten. Increase width of the knuckles.
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Team Magic - E4D(4) RWD - Sakura D4 RWD