Good for 300bhp all day long set of arp's and a decent head gasket, had one in a nova at that power with sccr box, did many track days a lots of road miles, all built at home never missed a beat and still going strong after 4yrs, turbos are shite though and the coscast is the one to have but early gm's can be repaired easily.

Great fun in a small vaux/ value for money, cheap/easy to built up to that bhp.