Roadster roll bars

[Talonmotorsport]

I've been playing with some tube latly and I've asked every body who walks through the door what they think a rollbar should look like and what size tube it should be. Considering the rollbar is mounted to a 16 gauge chassis 3mm ERW seams to be over kill, 2mm CDS is ££££ so 2.5mm wall ERW in either 42mm or 48mm dia? Which of the three designs you would be interested in although I will be making all three in the next week or so and will be in my ebay shop soon.