i just read in one of the threads here that putting an engine that is older than the car you're putting it in is illegal. if thats true, how come it's illegal? once i got my car (probably a '92-'94 civic) i was planning on putting a b16a1 in it. but if thats not legal, would a b16a2 be legal? is the b16a2 pretty much a direct swap into a civic? what other parts would i need to complete the swap (other than tranny, ecu, axels, harness...) thanks in advance.