I think better go rebuild ur 1.5 and bot it than swapping an old yrv turbo it should be slight cheaper than getting a yrv. The 3sz bot should have higher potential than a 1.3 yrv. If you want play stock internals then go below 0.6 boost i suggest, it should achieve around 150hp ady better than the stock yrv around 130hp. And bot can be done less than a week it should cost around 6-7k if u using back ur stock internals.