so id have to use g2 axles (90-93 teg) for it to fit an hf? also whats the redline for the hf? my buddies said 5k but online ive seen some say 6200k i thought the Si was the only one with that redline, or did they do a cluster swap, i saw this on ebay but the cars looked stock and never tampered with. was there a change in redlines between 88-89 and 90-91?