replacement parts are notoriously expensive in malaysia compared to even the bimmer. since only a hadnful of units sold in this country (relative to bimmer), obviously part distributors dont have bargaining power & cant pass any sort of bulk discount for the end customers. also, the design of those older models especially never considered the humid and hot malaysian weather hence reliability becomes a major factor.
cant comment on the 166 coz havent been inside one but, if compare the e46 vs the 156, bimmer has much better build quality. you'll notice a lot of squeek/rattles in an alfa, but in terms of look/styling (especially the interior), the alfa is better....to me la (me like 147), also take it to the twisty b road...it'll perform commendably, handling is very good!