I thought most sports cars were at least double-wishbone in the front but I wasn't sure. I know that an E36 isn't double-wishbone on all four wheels. the rear act's like double-wishbone but has a trailing arm that controls toe. I think an E30 would use the same trailing arm to wishbone suspension rear and double wishbone front.
I don't really know that much about suspension, but I do know what a wishbone is.