Custom exhaust would probably be around $2000...

Tuning is theoretically only $600...but I would probably say $1000 would be a fair price...

Dyno is on average $100/3pulls... so call it probably $500 for dyno...

so then you are looking at an additional 3500... = $7750 plus labor hours for fabrication and not to mention the special pixie dust EC sprinkles on everything to make it look nice and work in harmony...