Just started tearing my car apart tonight i had a bad knock coming from the bottom end not sure what it is yet but hopefully i will have it out tomorrow and figure out whats wrong. Im thinking while its all torn up about putting an elec fan, some pulleys and header wrap. Has anyone pulled there engine out with bbk longtubes still attached or should they come off? Also does it fit when putting them back in with them on? i have stage 8 locking header bolts but they keep coming loose so i would like to put the headers on while the engine is out. any other tips or comments are welcome. thanks