AVOID the electric roof. Most of them are stuffed by now and cost big bucks to replace. Plus it just adds weight to an already heavy car. Make sure you check the Targa seals these are also big bucks to replace.

From memory only the imports have the electric roof and not all of them have the B16a some have the SOHC engine in them.

Theres a million parts and mods for the B16a engine that comes standard in all Australian delivered Gen3 crx's. It depends on how much power you want to make and what your budget is. BLKCRX has over 400kws at wheels with this engine still running the 1600cc displacement (with a very crazy turbo setup ).