500+HP Ford Sierra ThunderSaloon || Cosworth Turbo Widebody Monster Drag & Track by turboandstance - December 22, 2019December 29, 2019 Another Special Guest on Retro Rides Gathering 2019 was this quite unique Ford Sierra/Sapphire of Trevor Collar, built to race on the spectacular ThunderSaloon Series in England, a Rear Wheel Drive YB Cosworth powered Monster. Originally built by Dave Thomas, it belongs to Mr. Collar since 2003 and since then