[ATAG_Bliss]

You're right. I thought the street legal class didn't allow internal modifications. It's the class below that "internal production class".

Either way, 1500rwhp has been made on 100% bone stock factory internals. Many companies sell GT TT kits with tune, all bolt on. No other manufacturer can make that kind of increase over stock with factory internals. That's my point. Hopefully it'll make sense now. The 2nd video, which I already explained, has factory internals and fuel system. Part 2 of that video shows the car making over 1500rwhp all in "bone stock" trim. Hopefully that'll help understand what I'm trying to say.