Hi Drew, cheers mate :)
We're confident for figures above 130rwhp. Hoping for close to 140 :)
The tyres are good for the money about $95 fitted & balanced. Just the fact they're lighter and narrower makes a huge improvement to the handling compared to 205's. The offset of the 13x7's has helped a lot too. Car is way more responsive, easier to throw around and acceleration greatly improved by less rolling diameter. I worked it out on gearcalc, 185/60/13 tyre is the equivilant of dropping from 3.77 diff to 3.89.