I'm not aware of any other changes to the engine specs ( I stand to be corrected) but there must have been some updates to the GDI ECU overtime, as the very last models are Euro 6 compliant and produce 154bhp, were earlier cars were only Euro 5 and 145 bhp

22 Plus Four KIMI
12 Plus 4 Sport OZZY
08 Roadster FELIX
06 4/4 70th LOKI
77 4/4 SEAMUS
85 4/4 MOLLY