Thanks for all the comments, many great points are raised and I thank you for sharing.
Here are a few responses to some of the above posts:
1) As Scott mentions, I to wonder if the multiple BMW entries are based on a "that works for him, so it should work for me" attitude or if these two body styles offer the best option for the tracks we race on.
I have personally entered the M1 (x2) and 320 (x2) as well as the Supra - I liked the 320 because the slightly higher CG with almost the same width as the M1 gave me a bit more "bite", but too be honest by the time I started tuning the 320, I also had much more experience with rubber tyres.
2) I know Richard has "tirelessly" (pun intended) campaigned for the use of urethane tyres, but on this proxy I am "sticking" with rubber. Yes NSR tyres are popular (BTW they have just announced a new range) but this proxy has also previously been won with Slot It N22's. I think the fact that the cars are very fast and that the results have consistently been very close says that the formula works. We have also had first time entries like Heli_CA and Camber win this series, so it shows that it can be done.
3) Running a second proxy is not an option for me, as nice as it would be. I also do feel that it would be a natural progression from Grp 5 to GT3- but NOTHING is decided and your participation is the most important thing, so I am reading the feedback and keeping an open mind.
Side Note - Scott the McLaren that you are referring to is not a GT3 car - the cars I am taking about are (2010 or newer) cars that race in the GT3 championship and are based on road going cars. The McLaren F1 was an earlier (1980's) car and raced in Le Mans before GT3 was born - there are many options to choose from and an approved list will be published, IF we go that route.
Here are just a few examples: (Porsche, Aston Martin, McLaren 650, 720, Mercedes SLS & GT3, Lamborghini Huracan, Maserati all have models that qualify)