Pfister Comet S2 Cabrio and Comet S2

Both the Pfister Comet S2 Cabrio and Comet S2 are very underwhelming; I feel like if someone is paying 300k+ for a car it should be able to go above 120 mph. I do not think these cars need to be the fastest but they should be more realistic. At the moment I am being gapped by local cars such as the Tampa; and I do not think a Porsche is slower than a car like that in real life. All that I am asking for is a top end speed that is a little more realistic and that fits within its class because I have other cars of the same class that go much faster.