QUOTE (mitchntx @ Jun 2 2011, 01:28 PM)

QUOTE (Blainefab @ Jun 2 2011, 03:25 PM)

QUOTE (FASTFATBOY @ Jun 1 2011, 07:11 PM)

How about a Corbeau Forza II?
That one is a tube frame seat, and not recommended for track use. If you go with Corbeau, the composite shell FX1 would be a better choice.
I'd also consider a Kirkey Intermediate RR seat - available in 18" width for about $50 more than the FX1.
What about a car that has no roll bar to attach a seat back brace?
In that case I would prescribe an FIA with current certification, which does not require a back brace, with the caveat that if you do tip over without a rollbar and the roof collapses, a race seat may increase occupants injuries. Theoretically an OEM seat will allow the drivers upper body to smoosh out of the way, where a race seat will hold it upright. YMMV.
My standard advice for adding the basic track safety systems (rollbar, seat, harnesses) is to do all 3 at once, or none.