I took a look at my 65 AMT kit last night and I have a Sean Carpenter 2+2 convertible body with a chassis also. The AMT kit is obviously too long but the chrome rear panel does have Pontiac on it and not Bonneville. The problem is those Bonneville tailights, I think that has frustrated me over the years when I think about doing my resin conversion with the convertible body. The interior from the 2+2 AMT kit is too long also if I remember right with the long wheelbase on the AMT kit. So I would think the AMT Grand Prix kit would be better for the interior but is the trim level incorrect for a 2+2? Let me know.