i was wondering if anyone has put header on thier mark VIII and if so do you think that it would be easy to do without pulling the engine out??

Search is a great tool. That being said this has been discussed through and through.

haha.. yeah.. i dont search either.. no patience for it... dont worry .. someone will be kind enough to reply with the info youre looking for

People have installed headers, beyond that question about how good they are performance benefits is a lot of opinions.

Easy is not a word that comes to mind when thinking of installing them, there a bitch from what I hear. You will prolly have to drop the k frame to install them.

Lets just say no you cant do it with out pulling the motor and for the several hundreds of dollars you pay you will get about 9 hp. Its not much but its not somethin to take your motor out to only do. If your motor is out for any reason then you could toss them on as a what the hell kinda thing

You can get room to work by dropping the front subframe, and hanging the engine from the top using an engine support bar.

I personally would just go with better manifolds. Either way you will need custom exhaust. For $50 to $100 you can get a set of used Cobra manifolds, preferably 2003/04.

...and for the several hundreds of dollars you pay you will get about 9 hp.

I actually estimated about 15 RWHP.

My best ET was a 13.866@100.36 before the headers and I ran 13.545@101.43 after the headers.

They may not be the best bang for the buck but it's a pretty decent bang none the less. ;)