Pumaspeed do a gt25 turbo kit and a gt28 turbo kit to suit

Then frs clutch and flywheel

Some people have used a 1.8 mm headgasket but your on borrowed time

For me I would fit proper internals, you can get rods and pistons with bolts and bearings for around a grand from pec

Then ma developments could fit vipec ecu so you could keep the vvt. This would all make a solid set up

But if you want to say money?
Sell your running gear and fit frs running gear with hybrid turbo ect