Yeah, ive seen an externally wastegated Porsche 930 Slantnose that had t3/t4's on it, and it was using twin external wastegates...

that guy used Kooks, probably gonna be expensive however

2500! i thought the subaru ones are pricey at 1000!! holy shit..

 

Kyle PM allen about this.....his friend brandon has done them and he does an amazing job

im not sure about prices though

here are some pics

 

WOW!!! i will do that...