The debut of the Porsche Carrera Cup GB at Knockhill will comprise rounds 13 and 14 of the season over the weekend of 7/8 August. As the championship heads north of the border for the first time, Tim Harvey (Team RPM) has a 32-point championship lead over Richard Westbrook (Red Line Racing) in the contest for the £55,000 Porsche road car that awaits the champion. Harvey knows that if he can keep on finishing in the top four, he will be very hard to catch, but one non-finish for the former BTCC championship is all that Westbrook needs to get right back into the title hunt. The tight and demanding Knockhill track could easily throw up some surprises, and the presence of former BTCC champion John Cleland in the VIP car from Porsche Cars GB will add another major variable into the picture."We’re great racing rivals, but we’re mates really,” says Harvey of Cleland. We’ve had battles over many years, and always fair battles on the track. The rest of it is just a bit of banter and a bit of winding up. But having said that, once we get in the cars we both want to beat each other." Despite his obvious desire to show Cleland how it’s done, Harvey knows that, above all, he must finish and score points."The second half of the Carrera Cup is looking very interesting, with drivers like Damien Faulkner coming in,” says Harvey. “So there is always the possibility of an outside factor coming in to play. And that could work to my advantage or to Richard’s advantage. I love Knockhill; it's a really good circuit," says Harvey.However, Westbrook will have to learn the track quickly. "I’ve never been to Knockhill. I’ll only see the circuit in testing," he says. "But I’ve had to learn new circuits all through my career."Faulkner (Motorbase Performance), meanwhile, has not raced at Knockhill since 1997 when he was in single-seaters, but a debut podium last time out of Croft is proof that Damien is a potential race winner. After a couple of troubled weekends, Jason Templeman (Team VLR) is keen to get his season back on track and is another contender for victory, while Jonathan Fildes (TCR) demonstrated at Croft that he is ready for his first Carrera Cup victory.Other leading runners include Nigel Rice (Red Line Racing), Andy Britnell (Motorbase Performance), Marcus Thomas (Team VLR) and Jason Young (Red Line Racing), while further strength in quality comes with drivers like Mark Hazell (Team Parker Racing), Gary Britnell (Motorbase Performance) and Eddie Wighton (Team RPM), who will race at his home track for the first time after making an encouraging Carrera Cup debut at Croft.Provisional championship points after round 12:1 Harvey 226; 2 Westbrook 194; 3 Templeman 140; 4 Fildes 137; 5 Rice 132; 6 Andy Britnell 118; 7 Chris Cooper 86; 8 Young 80; 9 Gary Britnell 62; 10 Thomas 62; etc.