I'm sure it'd only improve it (the torque curve, and performance). I think it' often a cope out with under performing engines to claim they are more torquey. Truth is, they rarely are. And even if they make a couple ft lb more, it's unlikely to make any real difference.
What you are likely to find is, without restrictors or a higher CR engine, it will make PEAK higher, but it'll still be making the same or more torque at 2000rpm too.
I remember when the Chevy LS1 came out, there was some outcry about how it must be dreadful, because PEAK torque was 4400rpm compared to 2500rpm for the out going LT1 Chevy SBC. And when you look at just these two stats, you can make yourself believe that is the case.
But the reality is, the LS1 makes just over 95% of it's PEAK torque at 1500rpm. Meaning it made way, way more torque at 2500rpm than the LT1 did. The difference being, it could carry that torque further up the rev range and thusly make a lot more horse power.
HP = torque x rpm / 5252