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463 Posts
That is pushing the limit of the stock block. Plenty of people are running 450+ to the wheels on a stock block but not cheaply. Any route you take to get that much power you will need to factor a dyno tune into your budget. When you factor in supporting mods, bigger fuel pump, injectors, regulator, clutch, and when the T5 thats rated at 300lbs of torque fails from double the amount its rated at you will have to invest in an upgraded trans. I dont mean to discourage you i just dont see if happening with less than 10k. A good set of heads alone will run in the $1500 range and add another 1500-2000 for a decent turbo kit. If i had to pick a route id say 351 swap. More cubes equals more power and the 351 blocks are stronger than the factory 302s.