hello all...im new to this forum. i am interested in the b18c integra type R motor and was wondering if anybody had problems swapping the engine with a d16z. for example, would there be any problems with the obd1 and obd2 conversion...if i was to install aftermarket headers, would they bolt on to my cat. converter then to my exhaust system without any problems. can it be done by yourself? these are some questions i have in mind and if there any others, please let me know.