what he said ^^^^^^I would hardly call a disco spud chasing power and theres no reason why a 350bhp Pulsar shouldn't be reliable with correct cooling. It will give a bit more zing than the stock turbo, but will also have better response and make the car more drivable.
For supporting mods do as Red Reading says, sort out the cooling and brakes then 555cc, Z32 and a mapped Nistune. I'd flog the E-manage as its a piggy back which I've never been a fan of.
If it's for a track car you're doing it wrong, don't chase horsepower these cars are quick enough in standard guise. Prepare the car with reliability, not horsepower in mind.
well as my Engine has stronger internals my original Idea was to go for something like a Gt30 or similar and even the Gearbox was rebuilt not to long ago so it should last. Plus its not going to be a used for drag racing and i have always been lucky with boxes.
Hahah famous last words, mine went about a month after saying the same.You've done it now! never say your gearbox will be alright.