yeah easy $800 saving. ill just find a reducer silicon pipe to replace the crossover, wont be the hardest thing ive done. goes well, breaks traction in 2nd just putting the foot down. not 100% sure without a proper dyno but my $200(I didnt pay $200) obd2 program says its pulling 283rwkw now, 263 with the old setup, and when it was tuned it made 265 so.. id say its close. the flex pipe has got a wire curled through it, its a intake flex pipe and its pretty sturdy, wouldnt collapse. ille take some pics of the battery thing for you when I get a chance, hopefully tomorrow. it was quite simple to make, and had to drill a hole in the wheel arch thing to bolt it down to. pics will explain. planning to go a Hdi intercooler very soon, and get silicon to replace that flex pipe for a smoother air flow. gotta keep up with my mates fg somehow