Alex...
I think your time is pretty good IMO

Just to give you some ideas, last time i saw some good cars at Combe (think it may have been Jap Fest last yr)... Martin Hadland was doing 1min 16's, Mark Shead was doing 1min 18/19's in his EVO, most of the other EVOs i think were doing around the 1min 24/25 mark. Martins was the quickest car on track that day

(note - this was some time ago, so my memory of the times may not be 100% accurate)
My RST has done somewhere around 1min 28, my standard R5 GTT did 1min 38 5 laps in a row til the head gasket blew
So i'd say 1min 32 is pretty ok given the current state of your car etc - nice one!
P.S.... foookin 1min 13 is gonna be mentally fast Porkie