Which suspension works best?

[DORIGTT]

Let's say I have a choice of building a Super Beetle (1302 or 1303 for those not in the USA) or a Standard Beetle with balljoint front and IRS rear suspension. Which works better for street/autocross/time trial/race etc?

The Porsche 356 does well I imagine on the track with essentially the same suspension up front as the Standard Beetle. The Porsche 911 uses a similar front set-up to the Super Beetle (1302 & 1303) and obviously works very well.

Which way to go and why for a vehicle project?

I now open the floor....