I can't remember for sure but as you say it'll handle 350bhp I'm assuming you have an MTX-75 fitted???? If so I would get a new 2.0 engine with some forged rods and pistons and then up the boost a little, I'm sure the T25 can blow a little harder than that. I would also go for an RS water pump and housing and maybe an intercooler upgrade to keep everything cool. Clutch upgrade? ATB diff? If you have an IB5 fitted I wouldn't touch it, it won't take much more than 190bhp in the grippy and heavy Focus.

I think the sticking point may be the T2, I know people have tuned it but I think you need the password to access it. I would put aside some money for dealing with that.

The T190 is a rare classic and I'd love one, very jealous.