Originally Posted by
fairgo
The side exhaust class had to have a pull start fitted, no bump starter was allowed. The TG class came about when a couple of people wanted to buy pro tourer chassis's with easy engine fitting, could use pro tourer exhausts and were able to bump start cars which also made ability to run engines leaner.
Seeing that most manufacturers don't make side exhaust engines anymore and OS still makes the TG, why not just develop a class around the latest version of that engine?!? Find a pipe that works well with the TG then go from there as far as the other rules for level competition.