Power to weight is what you need to look at on your P plates, lots of little 4 CYL cars are going to be quicker than a bigger heavier 6 CYL, just buy a little Honda or similar, no point in getting anything else really if its performance you after, unless you want a car that looks fast but is really really slow.
And only spend money on brake, tyres and suspension, power mods on NA cars are no value for money, excluding breathing mods like a good quality filter panel and zorst.
Those little Honda go alright, seen a few stockish cars at track days and they punch well above their weight