Hindi naman dramatic ang difference sa power pero kung sensitive ka, mararamdaman mo ang difference. Pero IMO mas matipid para sakin ang 1.5. Pro malaking difference na yung sa torque ha. Mas kailangan mo yun over the HP.
Rims -20-30k with tires na yan depends on your choice.
Pioneer hu with usb cheapest would be around 2k-3k
Speakers - about 3-4k siguro
Alarm system around 1.5k
Horn - 1k-2k depends on your choice.
Fog lamps maybe 3k
A friend of mine mentioned that the entry level, "pang taxi" avanza's chassis has thinner steel, compared to the other variants. How true?
I bet your friend based his statement from the fact that the Avanza J has thinner door trimmings than the E/G variants. However, it's no way indicative of how thick the steel behind the car is. Also, I don't think it makes economic sense to have a different line to create a completely different chassis for the lower-end variants.