Stop saying ZR1, its Z06. A 550 rwhp fox is not going to smoke a C6 Z06 with a healthy cam. You guys make no sense. The guy was not talking about how it costs so much less to build a fox then buy a c6 Z the whole point is he wants to ruin a $85k car. Which I don't blame him, its nice wrecking things that you know cost way more then what you built. You would need $30k into a clean fox, including the at least $5,000 for the car. AT LEAST $5,000 for a real shortblock but chances are it would be more. Custom grind cam at least $300, good heads $1400+, intake $450+, rockers, lifters, pushrods, timing set not sure but a reasonable guess is $400 for quality parts, radiator $200+, water pump $75+, valve covers $100+, Quality turbo kit $3,000, ignition $500+, BS3, Acell 7+ etc, $1500+, chances are at least $500 in gauges, add a wideband for $300, Wheels and tires $1200+,Full suspension front and rear $2,000+, cage, torques boxes fixed up, subframe connectors Depends if you do it yourself but we'll figure around $2,000, fuel system $1,000+, harnesses $150+, $3,000 into a tranny setup atleast doesnt matter what you do, $200 driveshaft, $1200 into the rear, have the suspension setup $350+, $500 in tuning. That should all be around $27,600. Thats with a clean fox, I paid $5500 for mine and they go for more then that now, I only figured for $5000, and various other items are at least what I said, then you know you'd want new carpet fix various things in the interior as you went this far, maybe seats and the tons of other things I didn't mention that add up fast like fluids, spark plugs, belts, brakes etc. Even say $28,000 without buying pos junk parts that some A hole sells you on corral. Thats a far cry from $10-15k. It would have the potentional to do pretty much anything with these lame ass outdated 5.0's as gear banger would say.