We talking stock internals here? Stock cams and stuff or?
Do they need to be compact enough to sit either side, or mounted at the front, or? What sort of £££ you on about spending?
A pair of GTX28s are tiny so will fit either side, should do 600odd at 1bar, and can be pushed to 800+ if need be, and will spool fast, but obv' fucking expensive.
GT2871s are another option for smaller ones, I'm not a big fan of them tbh, but they are compact at least, and can do the power you mean and spool well.
Pair of HY35s or GT30s are another option (I'd go HY35) which are bigger so might not fit as side low mounts, but would as higher mounts or front mounts, and still spool well. And are 1000bhp+ capable without the slower spool of the GT35, so you got room to grow. Powerband will still start higher with these though, and so I'd probably not without cams too as almost every single 1UZ on stock cams and turbos I've seen, even with massive turbos, doesn't make decent power beyond 6500rpm, so you'd likely have a fairly small rev range without cams.
Lots of other options via BorgWarner, Precision, etc etc, but it's all much of a muchness.