I don't know if it's a good idea or not. The Boxter/Cayman vs. Exige is a close match to watch anyway, I got it in a magazine recently. I think it was a Car and Driver. The Cayman was plenty quicker, but they handled evenly. Maybe Exige vs. Box S is a closer performance comparison. But one is a hardtop, the other a convertible.
Anyway, I've read rumors of bringing back the 948 and 928 and stuff. They said the 948 would have a v8 with 400 or so horses. Bad idea. Did the 928 have a 4 cylinder? if it did bring that back with about 220 horses. Never mind, there's no competition for that. How 'bout they add the Panamera, with the Cayenne's V8 and turbo 8, and just leave the lineup with 4 models, eh?