The biggest grid of the season so far will contest rounds 11 and 12 of the Porsche Carrera Cup GB at Snetterton this weekend (12/13 July), when a tremendous 20-car field will line-up for start of the second half of the championship schedule.In total, nine drivers will make their Carrera Cup debut at the Norfolk track. New teams entering the championship are Team Eurotech, Parr Motorsport and RSS Performance, while Pippa Mann becomes the first female racer to register for the championship.Other newcomers to the grid include Jake Rosenzweig (Team Parker Racing), Andy Neate (Red Line Racing), Jim Geddie (ABG Motorsport), Robin Clark (Parr Motorsport) and RSS Performance duo Graeme Mundy and George Mackintosh.Meanwhile, Steve Rance and Glynn Geddie (Parr Motorsport) will compete in their own cars for the first time, having previously raced in the PCGB entry. In the PCGB cars at Snetterton will be Jack Clarke and Sarah Franklin.At the head of the championship, Michael Caine (Team Parker Racing) heads Tim Harvey (Red Line Racing) and Tim Bridgman (Team Parker Racing), and with just 18 points covering all three drivers the stage is set for a thrilling run to the title over the next 10 races. Both Caine and Bridgman can count Snetterton as their local track, while Harvey heads to East Anglia fresh from a top 10 finish in the Porsche Supercup race supporting the British Grand Prix at Silverstone.However, Jota Sport racers Sam Hancock and Phil Quaife are both still in contention, particularly if any of the top three fail to finish a race. While most of the contenders have had a six-week break since their last race at Croft, Hancock and Quaife have taken part in Supercup races during the break and Hancock claimed a fine seventh place at Silverstone.Currently sixth in the points and the remaining member of the pack that has made the running at the head of the championship this season is Charles Bateman (Team Parker Racing) and he will be chasing another overall podium against some tremendously strong competition.In the pro-am1 category Tony Gilham (ReDesign Racing) heads Nigel Rice (Red Line Racing) by a significant margin after a couple of non-finishes for Rice. Meanwhile, Tommy Dreelan (Qserv) could move ahead in the pro-am2 points' table as a seven-car field of pre-2008 cars makes this the biggest entry for the category to date.After qualifying on Saturday afternoon, both races will be on Sunday with round 11 at 10.20am and round 12 scheduled for 4.15pm.